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Vibrational spectra and elastic, piezoelectric, and magnetoelectric properties of HoFe3(BO3)(4) and HoAl3(BO3)(4) crystals / V. I. Zinenko [et al.] // J. Exp. Theor. Phys. - 2013. - Vol. 117, Is. 6. - P. 1032-1041, DOI 10.1134/S1063776113140203. - Cited References: 17. - This study was supported financially by the President of the Russian Federation under the program "Leading Scientific Schools" (grant no. NSh 4828.12.2), the Russian Foundation for Basic Research (project no. 12-02-00025-a), and the Ministry of Education and Science of the Russian Federation (contract no. 8365). . - ISSN 1063-7761. - ISSN 1090-6509

РУБ Physics, Multidisciplinary
Рубрики:
MAGNETOELASTIC PROPERTIES
SINGLE-CRYSTALS
FERROBORATE
Аннотация: Raman spectra of light are obtained for HoFe3(BO3)(4) and HoAl3(BO3)(4) crystals at various temperatures and are used for determining the frequencies of crystal lattice vibrations at the center of the Brillouin zone. It is also found that the HoFe3(BO3)(4) crystal exhibits a phase transition at T (c) a parts per thousand 366 K. The magnetoelectric effect in the paramagnetic phase of these compounds is studied experimentally. The lattice vibration frequencies, elastic and piezoelectric moduli, Born dynamic charges, and the high-frequency permittivity are calculated using the density functional method. A peculiar behavior of the transverse acoustic vibration branch is observed in the I" - Z direction of the Brillouin zone of the HoFe3(BO3)(4) crystal. The electric polarization induced by an external field is estimated using the calculated values of piezoelectric moduli and experimental values of magnetostriction.
Спектры КР света получены для HoFe3 (BO3) 4 и HoAl3 (BO3) 4 кристаллы при различных температурах и используются для определения частоты колебаний кристаллической решетки в центре зоны Бриллюэна. Также обнаружено, что HoFe3 (BO3) 4 демонстрирует фазовый переход при Tc ≈ 366 К. Магнитоэлектрический эффект в парамагнитной фазе этих соединений экспериментально исследован. Частоты колебаний решетки, упругие и пьезоэлектрические модули, Борновские динамические заряды, и высокочастотная проницаемость рассчитываются с использованием метода функционала плотности. Своеобразное поведение поперечной ветви акустических колебаний наблюдается в направлении Γ Z зоны Бриллюэна в HoFe3 (BO3) 4.Электрическая поляризация индуцированная внешним полем оценивается с помощью расчетные значения пьезомодулей и экспериментальных значений магнитострикции.

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Публикация на русском языке Колебательные спектры, упругие, пьезоэлектрические и магнитоэлектрические свойства кристаллов HoFe3(BO3)4 и HoAl3(BO3)4. - [S. l. : s. n.]

Доп.точки доступа:
Zinenko, V. I.; Зиненко, Виктор Иванович; Pavlovskii, M. S.; Павловский, Максим Сергеевич; Krylov, A. S.; Крылов, Александр Сергеевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Eremin, E. V.; Еремин, Евгений Владимирович; Russian Federation under the program "Leading Scientific Schools" [NSh 4828.12.2]; Russian Foundation for Basic Research [12-02-00025-a]; Ministry of Education and Science of the Russian Federation [8365]
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    Thermophysical properties of lithium thiogallate that are important for optical applications / A. Kurus, A. Yelisseyev, S. Lobanov [et al.] // RSC Adv. - 2021. - Vol. 11, Is. 62. - P. 39177-39187, DOI 10.1039/d1ra05698k. - Cited References: 41. - Crystal growth and investigation of physical properties were supported by Russian Science Foundation, Russia (#19-12-00085). Spectroscopic study was performed on a state assignment of the Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences Russia and Ministry of Science and Higher Education, Russia. Measurements of thermal conductivity were funded by RFBR and Novosibirsk region (grant #20-42-543006\20) . - ISSN 2046-2069
   Перевод заглавия: Теплофизические свойства тиогаллата лития, важные для оптических приложений

РУБ Chemistry, Multidisciplinary
Рубрики:
NON-ENANTIOMORPHOUS CRYSTAL
   MID-IR
   SINGLE-CRYSTALS
   FLASH METHOD
Аннотация: Lithium thiogallate LiGaS2 is one of the most common nonlinear crystals for mid-IR due to its extreme beam strength and wide transparency range; however, its thermophysical properties have not yet been practically studied. Large crystals of high optical quality are grown. DTA revealed features at 1224 K below melting point (1304 K) that are associated with the oxygen containing compounds of the LiGaO2−xSx type. The thermal conductivity of LiGaS2 (about 10.05 W (m−1 K−1)) and band gap value (3.93 eV at 300 K) are found to be the highest in the LiBC2 family. Isotropic points in the dispersion characteristics for the refractive index are found and LiGaS2-based narrow-band optical filters, smoothly tunable with temperature changes, are demonstrated. Intense blue photoluminescence of anionic vacancies VS is observed at room temperature after annealing LiGaS2 in vacuum, whereas orange low-temperature emission is related to self-trapped excitons. When LiGaS2 crystals are heated, spontaneous luminescence (pyroluminescence) takes place, or thermoluminescence after preliminary UV excitation; the parameters of traps of charge carriers are estimated. The obtained data confirm the high optical stability of this material and open up prospects for the creation of new optical devices based on LiGaS2.

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Держатели документа:
Novosibirsk State Univ, 2 Pirogov Str, Novosibirsk 630090, Russia.
SB RAS, Sobolev Inst Geol & Mineral, 3 Kopyug Ave, Novosibirsk 630090, Russia.
SB RAS, Nikolaev Inst Inorgan Chem, 3 Lavrentyev Ave, Novosibirsk 630090, Russia.
SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
SB RAS, Inst Chem & Chem Technol, 42 K Marx Str, Krasnoyarsk 66049, Russia.
SB RAS, Kutateladze Inst Thermophys, 1 Lavrentyev Ave, Novosibirsk 630090, Russia.

Доп.точки доступа:
Kurus, Alexey; Yelisseyev, Alexander; Lobanov, Sergei; Plyusnin, Pavel; Molokeev, M. S.; Молокеев, Максим Сергеевич; Solovyev, Leonid; Samoshkin, Dmitry; Stankus, Sergei; Melnikova, S. V.; Мельникова, Светлана Владимировна; Isaenko, Lyudmila; Russian Science Foundation, RussiaRussian Science Foundation (RSF) [19-12-00085]; RFBRRussian Foundation for Basic Research (RFBR) [20-42-543006\20]; Novosibirsk region [20-42-543006\20]
}
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Terahertz spectroscopy of crystal-field transitions in magnetoelectric TmAl3(BO3)4 / A. M. Kuzmenko [et al.] // Phys. Rev. B. - 2016. - Vol. 94, Is. 17. - Ст. 174419, DOI 10.1103/PhysRevB.94.174419. - Cited References:35. - This work was partially supported by the Russian Foundation for Basic Research (Grants No. 14-02-91000, No. 15-02-07647, No. 14-02-00307, No. 13-02-12442, and No. 15-42-04186), Sci. school-924.2014.2, and by the Austrian Science Funds (Grants No. I815-N16, No. W-1243, and No. P27098-N27). . - ISSN 2469-9950. - ISSN 2469-9969

РУБ Physics, Condensed Matter
Рубрики:
ELECTRIC POLARIZATION
PHASE-TRANSITIONS
SINGLE-CRYSTALS
Аннотация: Dynamic magnetic properties of magnetoelectric TmAl3(BO3)4 borate have been investigated by terahertz spectroscopy. Crystal-field transitions within the ground multiplet H36 of Tm3+ ions are observed and they are identified as magnetic-dipole transitions from the ground singlet A1 to the next excited doublet E of Tm3+ ions. Unexpected fine structure of the transitions is detected at low temperatures. The new modes are assigned to local distortions of the sites with D3 symmetry by Bi3+ impurities, which resulted in the splitting of the A1→E transition. Two types of locally distorted sites are identified and investigated. The main contribution to the static magnetic susceptibility is shown to be determined by the matrix elements of the observed magnetic transitions. We demonstrate that even in case of local distortions the symmetry of the undistorted crystal is recovered for magnetic and for quadratic magnetoelectric susceptibilities.

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Держатели документа:
Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia.
Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria.
Siberian Branch RAS, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kuzmenko, A. M.; Mukhin, A. A.; Ivanov, V. Yu.; Komandin, G. A.; Shuvaev, A.; Pimenov, A.; Dziom, V.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Russian Foundation for Basic Research [14-02-91000, 15-02-07647, 14-02-00307, 13-02-12442, 15-42-04186]; Sci. school [924.2014.2]; Austrian Science Funds [I815-N16, W-1243, P27098-N27]
}
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Temperature dependence of the spontaneous polarization, acoustic and strain anomalies in strontium barium niobate crystals of different chemical compositions probed by the second harmonic generation technique / A. M. Pugachev, I. V. Zaytseva, V. K. Malinovsky [et al.] // Ferroelectrics. - 2020. - Vol. 560, Is. 1. - P. 54-60, DOI 10.1080/00150193.2020.1722883. - Cited References: 19. - This work was supported by the Russian Foundation for Basic Research, projects no. 18-02-00399 and 19-42-543-016 and State assignment No AAAA-A17-117052410033-9. . - ISSN 0015-0193. - ISSN 1563-5112

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
RELAXOR
GROWTH
Кл.слова (ненормированные):
SBN-x crystals -- polar regions -- ferroelectric phase transition -- second harmonic generation -- Brillouin spectroscopy
Аннотация: In SrxBa1-xNb2O6 crystals (x = 0.33, 0.5, 0.61, and 0.75), temperature dependences of spontaneous polarization, strain, elastic modules, and second harmonic generation (SHG) signal are compared. It is revealed that SHG describes the temperature dependences of dipole moments in polar nanoregions in paraelectric phase. In the vicinity of the phase transition in paraelectric phase, SHG reflects the temperature behavior of relatively large and long-lived polar asymmetric regions as indicated by the presence of the intermediate temperature range on the temperature dependence of this nonlinear response.

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Держатели документа:
Russian Acad Sci, Inst Automat & Electrometry, Novosibirsk, Russia.
Kirensky Inst Phys Fed Res Ctr KSC SB RAS, Krasnoyarsk, Russia.
Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk, Russia.
Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow, Russia.

Доп.точки доступа:
Pugachev, A. M.; Zaytseva, I., V; Malinovsky, V. K.; Surovtsev, N., V; Gorev, M. V.; Горев, Михаил Васильевич; Ivleva, L. I.; Lykov, P. A.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-02-00399, 19-42-543-016, AAAA-A17-117052410033-9]
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    Synthesis, structural and spectroscopic properties of acentric triple molybdate Cs2NaBi(MoO4)3 / A. A. Savina [et al.] // J. Solid State Chem. - 2015. - Vol. 225. - P. 53–58, DOI 10.1016/j.jssc.2014.11.023. - Cited References: 66. - The authors are grateful to Dr. K.M. Khal'baeva and Dr. Irina A. Gudkova for their assistance in preparing the compound and taking X-ray single-crystal diffraction data. This study is partly supported by the Russian Foundation for Basic Research (Grants 13-03-01020 and 14-03-00298). V.V.A., A.S.K. and A.S.O. gratefully acknowledge the Ministry of Education and Science of the Russian Federation for a partial financial support. . - ISSN 0022-4596. - ISSN 1095-726X
   Перевод заглавия: Синтез, структурные и спектроскопические свойства ацентричного тройного молибдата Cs2NaBi(MoO4)3

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Physical
Рубрики:
CRYSTAL-STRUCTURE
   SINGLE-CRYSTALS
   VIBRATIONAL PROPERTIES
   RAMAN-SPECTROSCOPY
   HYDROTHERMAL SYNTHESIS
   DIELECTRIC-PROPERTIES
   SELECTIVE OXIDATION;
   BISMUTH MOLYBDATES
   IONIC-CONDUCTIVITY
   OPTICAL-PROPERTIES
Кл.слова (ненормированные):
Triple molybdate -- Sodium -- Cesium -- Bismuth -- Crystal structure -- Raman spectroscopy -- CRYSTAL-STRUCTURE -- SINGLE-CRYSTALS -- VIBRATIONAL PROPERTIES -- RAMAN-SPECTROSCOPY -- HYDROTHERMAL SYNTHESIS -- DIELECTRIC-PROPERTIES -- SELECTIVE OXIDATION; -- BISMUTH MOLYBDATES -- IONIC-CONDUCTIVITY -- OPTICAL-PROPERTIES
Аннотация: New ternary molybdate Cs2NaBi(MoO4)3 is synthesized in the system Na2MoO4–Cs2MoO4–Bi2(MoO4)3. The structure of Cs2NaBi(MoO4)3 of a new type is determined in noncentrosymmetric space group R3c, a=10.6435(2), c=40.9524(7) Å, V=4017.71(13) Å3, Z=12 in anisotropic approximation for all atoms taking into account racemic twinning. The structure is completely ordered, Mo atoms are tetrahedrally coordinated, Bi(1) and Bi(2) atoms are in octahedra, and Na(1) and Na(2) atoms have a distorted trigonal prismatic coordination. The Cs(1) and Cs(2) atoms are in the framework cavities with coordination numbers 12 and 10, respectively. No phase transitions were found in Cs2NaBi(MoO4)3 up to the melting point at 826 K. The compound shows an SHG signal, I2w/I2w(SiO2)=5 estimated by the powder method. The vibrational properties are evaluated by Raman spectroscopy, and 26 narrow lines are measured.

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Держатели документа:
SB RAS, Baikal Inst Nat Management, Lab Oxide Syst, Ulan Ude 670047, Russia.
Buryat State Univ, Dept Chem, Ulan Ude 670000, Russia.
SB RAS, Rzhanov Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia.
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia.
Novosibirsk State Univ, Lab Semicond & Dielect Mat, Novosibirsk 630090, Russia.
SB RAS, Nikolaev Inst Inorgan Chem, Lab Crystal Chem, Novosibirsk 630090, Russia.
Novosibirsk State Univ, Dept Nat Sci, Novosibirsk 630090, Russia.
SB RAS, Kirensky Inst Phys, Lab Mol Spectroscopy, Krasnoyarsk 660036, Russia.
SB RAS, Nikolaev Inst Inorgan Chem, Lab Epitaxial Layers, Novosibirsk 630090, Russia.
Novosibirsk State Univ, Lab Res Methods Composit & Struct Funct Mat, Novosibirsk 630090, Russia.
SB RAS, Kirensky Inst Phys, Lab Crystal Struct, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660079, Russia.
SB RAS, Inst Automat & Elect, Lab Condenced Matter Spectroscopy, Novosibirsk 630090, Russia.

Доп.точки доступа:
Savina, A. A.; Atuchin, V. V.; Solodovnikov, S. F.; Solodovnikova, Z. A.; Krylov, A. S.; Крылов, Александр Сергеевич; Maximovsky, E. A.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Pugachev, A. M.; Khaikina, E. G.; Russian Foundation for Basic Research [4828.2012.2, 12-02-31205]; Federal Special Program "Scientific and scientific-pedagogical staff of innovative Russia" [8379]
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Studies of the heat capacity and thermal expansion of the Na0.95K0.05NbO3 solid solution / M. V. Gorev [et al.] // Phys. Solid State. - 2014. - Vol. 56, Is. 2. - P. 367-372, DOI 10.1134/S1063783414020115. - Cited References: 27. - This study was supported by the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (grant no. NSh-4828.2012.2) and the Russian Foundation for Basic Research (project no. 12-02-31799 mol_a). . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
SODIUM NIOBATE
   PHASE-TRANSITIONS
   TEMPERATURE-RANGE
   SINGLE-CRYSTALS
   KNBO3
   FERROELECTRICS
   DIFFRACTION
   OCTAHEDRA
Аннотация: The heat capacity and thermal expansion of ceramic samples of the Na0.95K0.05NbO3 solid solution have been investigated over a wide temperature range of 100-750 K. The observed anomalies in the heat capacity and thermal expansion at T (4) = 297 K, T (3) = 535 K, T (2) = 665 K, and T (1) a parts per thousand 710 K correspond to the sequences of phase transitions N - Q - G - S - T1. It has been shown that, as a result of the phase transitions, the unit cell volume at T (4) and T (2) decreases, and at T (3) and T (1), increases with increasing temperature. The directions of the shift of the phase transition temperatures induced by hydrostatic pressure have been determined. It has been established that all structural transformations are accompanied by relatively small variations in the entropy. Different mechanisms of the structural distortions have been discussed.

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Публикация на русском языке Исследования теплоемкости и теплового расширения твердого раствора Na0.95K0.05NbO3 [Текст] / М. В. Горев [и др.] // Физ. тверд. тела. - 2014. - Т. 56 Вып. 2. - С. 362-367

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia
Southern Fed Univ, Inst Phys Res, Rostov Na Donu 344090, Russia

Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Raevskaya, S. I.; Ivliev, M. P.; Raevskii, I. P.; Flerov, I. N.; Флёров, Игорь Николаевич; Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation [NSh-4828.2012.2]; Russian Foundation for Basic Research [12-02-31799 mol_a]
}
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    Raman study of HoFe3(BO3)4 at simultaneously high pressure and high temperature: p–T phase diagram / A. S. Krylov [et al.] // J. Raman Spectrosc. - 2017. - Vol. 48, Is. 11. - P. 1406-1410, DOI 10.1002/jrs.5078. - Cited References:35. - Authors are grateful to Prof. A.N. Vtyurin for his valuable discussion. This work was supported by the Russian Foundation for Basic Research (grant no. 17-02-00694) . - ISSN 0377-0486. - ISSN 1097-4555
   Перевод заглавия: Исследование методом комбинационного рассеяния света HoFe3(BO3)4 при одновременном высоком давлении и высокой температуре: фазовая диаграмма p-T

РУБ Spectroscopy
Рубрики:
HYDRATE FORMATION
   SINGLE-CRYSTALS
   WATER SYSTEM
   TRANSITIONS
Кл.слова (ненормированные):
phase transitions -- high hydrostatic pressure -- ferroborates -- p-T phase -- diagram -- nanocrystal
Аннотация: Raman spectra of a HoFe3(BO3)4 crystal chip has been investigated at simultaneously high temperature and high pressure (up to 7.1 GPa and 560 K). On the basis of Raman analysis, the assignment to one of the two possible crystal phases has been made. The experimental p–T phase diagram of HoFe3(BO3)4 was established. An increase in the pressure leads to an increase in the temperature of transition. The phase boundary equation was obtained. Neither triple points nor a phase with new symmetry was revealed in the phase diagram. A critical point with the temperature T = 560 K and the pressure p = 2.53 GPa was found. The nanocrystals with different shapes began to grow on crystal surface after reaching that point. The composition of new nanocrystals is identical to the composition of initial crystal.

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Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Nemtsev, I. V.; Немцев, Иван Васильевич; Krylova, S. N.; Крылова, Светлана Николаевна; Shabanov, A. V.; Шабанов, Александр Васильевич; Krylov, A. A.; International GeoRAMAN Conference(12th ; June 9-15, 2016 ; Novosibirsk, Russia)
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Peschanskii, A. V.
Raman scattering in multiferroic SmFe3(BO3)4 / A. V. Peschanskii, V. I. Fomin, I. A. Gudim // Low Temp. Phys. - 2016. - Vol. 42, Is. 6. - P. 475-483, DOI 10.1063/1.4954783. - Cited References:21 . - ISSN 1063-777X. - ISSN 1090-6517

РУБ Physics, Applied
Рубрики:
SINGLE-CRYSTALS
   MAGNETOELASTIC PROPERTIES
   PHASE-TRANSITIONS
   FERROBORATE
   PHONONS
Аннотация: Raman spectrum of single-crystal SmFe3(BO3)4 was studied in the frequency range from 3 to 1500 cm−1 at temperatures 10–300 K. All the A 1 and E phonon modes predicted by the group theory for a given symmetry of the crystal were observed. The magnitudes of splitting between the LO and TO components of polar E phonons were determined. It was found that under the transition to a magnetically ordered phase, the behavior of the intensity of the line corresponding to the A 1 vibrational mode is anomalous. It was shown that at low temperatures the spectrum of two-magnon excitations has a complex shape and is observed with both nondiagonal and diagonal components of the scattering tensor. This complex shape reflects the features in the density of states of the magnetic branches. An estimate of the magnon energy Em at the Brillouin zone boundary gave ∼47 cm−1. The structure of the ground multiplet 6 H 5/2 of a Sm+3 ion in paramagnetic and antiferromagnetic states as well as the effect of the magnetic phase transition on it were studied. Electron-phonon interaction for the electronic excitation at 225 cm−1 was revealed.

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Публикация на русском языке Песчанский А. В. Рамановское рассеяние света в мультиферроике SmFe3(BO3)4 [Текст] / А. В. Песчанский, В. И. Фомин, И. А. Гудим // Физ. низких температур. - Харьков : Физико-технический институт низких температур им. Б.И. Веркина Национальной академии наук Украины, 2016. - Т. 42 Вып. 6. - С. 607-618

Держатели документа:
Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, 47 Nauki Ave, UA-61103 Kharkov, Ukraine.
Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Fomin, V. I.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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    Probing magnetostructural correlations in multiferroic HoAl3(BO3)4 / H. Zhang [et al.] // Phys. Rev. B. - 2015. - Vol. 92, Is. 10. - Ст. 104108, DOI 10.1103/PhysRevB.92.104108. - Cited References:97. - This work is supported by the U.S.Department of Energy Grant No. DE-FG02-07ER46402. Synchrotron powder x-ray diffraction and x-ray absorption data acquisition were performed at Brookhaven National Laboratory's National Synchrotron Light Source (NSLS). Use of the NSLS was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. The Physical Properties Measurement System used in the heat capacity measurements was acquired under National Science Foundation Major Research Instrumentation Grant No. DMR-0923032 (American Recovery and Reinvestment Act award). This research used resources of the National Energy Research Scientific Computing Center, a U.S. Department of Energy Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. . - ISSN 1098. - ISSN 1550-235X
   Перевод заглавия: Исследование магнитоструктурной корреляции в мультиферроике HoAl3(BO3)4

РУБ Physics, Condensed Matter
Рубрики:
PAIR DISTRIBUTION FUNCTION
   TOTAL-ENERGY CALCULATIONS
   WAVE BASIS-SET
   FERROELECTRIC POLARIZATION
   DEBYE TEMPERATURES
   SINGLE-CRYSTALS
   HOFE3(BO3)4
   GDFE3(BO3)4
   DIFFRACTION
   FEATURES
Аннотация: The system HoAl3(BO3)(4) has recently been found to exhibit a large magnetoelectric effect. To understand the mechanism, macroscopic and atomic level properties of HoAl3(BO3)(4) were explored by temperature and magnetic field dependent heat capacity measurements, pressure and temperature dependent x-ray diffraction measurements, as well as temperature and magnetic field dependent x-ray absorption fine structure measurements. The experimental work was complemented by density functional theory calculations. An anomalous change in the structure is found in the temperature range where large magnetoelectric effects occur. No significant structural change or distortion of the HoO6 polyhedra is seen to occur with magnetic field. However, the magnetic field dependent structural measurements reveal enhanced correlation between neighboring HoO6 polyhedra. This observed response is seen to saturate near 3 T. A qualitative atomic level description of the mechanism behind the large electric polarization induced by magnetic fields in the general class of RAl3(BO3)(4) systems (R = rare earth) is developed.

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New Jersey Inst Technol, Dept Phys, Newark, NJ 07102 USA.
SUNY Stony Brook, Inst Mineral Phys, Stony Brook, NY 11794 USA.
Brookhaven Natl Lab, Photon Sci Div, Upton, NY 11973 USA.
RAS, Siberian Branch, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Zhang, H.; Yu, T.; Chen, Z.; Nelson, C. S.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Abeykoon, A. M. M.; Tyson, T. A.
}
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10.

    Pressure-stimulated synthesis and luminescence properties of microcrystalline (Lu,Y)3Al5O12:Ce3+ garnet phosphors / V. V. Atuchin [et al.] // ACS Appl. Mater. Interfaces. - 2015. - Vol. 7, Is. 47. - P. 26235-26243, DOI 10.1021/acsami.5b08411. - Cited References: 75. - This work was partly supported by the National Natural Science Foundations of China (Grant Nos. 51272242 and 51511130035) and the Russian Foundation for Basic Research (Grant No. 15-52-53080 GFEN_a). V.V.A. was partly supported by the Ministry of Education and Science of the Russian Federation . - ISSN 1944-8244
   Перевод заглавия: Синтез стимулированный давлением и люминесцентные свойства микрокристаллических гранатов (Lu,Y)3Al5O12:Ce3+

РУБ Nanoscience & Nanotechnology + Materials Science, Multidisciplinary
Рубрики:
LASER MASS-SPECTROMETRY
   LIGHT-EMITTING-DIODES
   WHITE-LIGHT
   SINGLE-CRYSTALS
   OPTICAL-PROPERTIES
   ELECTRONIC-STRUCTURE
   VIBRATIONAL PROPERTIES
   PHASE-TRANSITIONS
   PARTICLE-SIZE
   GROWTH
Кл.слова (ненормированные):
synthesis -- pressure -- garnet -- structure -- luminescence -- phosphor
Аннотация: The Lu2.98Ce0.01Y0.01Al5O12 and Y2.99Ce0.01Al5O12 phosphors were synthesized by solid state reaction at temperature 1623 K and pressure 1.5 × 107 Pa in (95% N2 + 5% H2) atmosphere. Under the conditions, the compounds crystallize in the form of isolated euhedral partly faceted microcrystals ∼19 μm in size. The crystal structures of the Lu2.98Ce0.01Y0.01Al5O12 and Y2.99Ce0.01Al5O12 garnets have been obtained by Rietveld analysis. The photoluminescence (PL) and X-ray excited luminescence (XL) spectra obtained at room temperature indicate broad asymmetric bands with maxima near 519 and 540 nm for Y2.99Ce0.01Al5O12 and Lu2.98Ce0.01Y0.01Al5O12, respectively. The light source was fabricated using the powder Lu2.98Ce0.01Y0.01Al5O12 phosphor and commercial blue-emitting n-UV LED chips (λex = 450 nm). It is found that the CIE chromaticity coordinates are (x = 0.388, y = 0.563) with the warm white light emission correlated color temperature (CCT) of 6400 K and good luminous efficiency of 110 lm/W. © 2015 American Chemical Society.

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Держатели документа:
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russian Federation
Functional Electronics Laboratory, Tomsk State University, Tomsk, Russian Federation
Laboratory of Semiconductor and Dielectric Materials, Novosibirsk State University, Novosibirsk, Russian Federation
Analytical Laboratory, Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russian Federation
Department of Natural Sciences, Novosibirsk State University, Novosibirsk, Russian Federation
Department of Applied Physics, Novosibirsk State University, Novosibirsk, Russian Federation
Laboratory of Crystal Physics, Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Laboratory of High Pressure Minerals and Diamond Deposits, Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russian Federation
School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, China

Доп.точки доступа:
Atuchin, V. V.; Beisel, N. F.; Galashov, E. N.; Mandrik, E. M.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Yelisseyev, A. P.; Yusuf, A. A.; Xia, Z.
Свободных экз. нет}
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11.

Phase transitions in elpasolites (ordered perovskites) / I. N. Flerov [et al.] // Materials Science and Engineering R: Reports. - 1998. - Vol. 24, Is. 3. - P. 81-151. - Cited References: 174 . - ISSN 0927-796X

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
ELASTIC NEUTRON-DIFFRACTION
   MII = CO
   RAMAN-SCATTERING
   THERMODYNAMIC PROPERTIES
   CRYSTAL-STRUCTURE
   SINGLE-CRYSTALS
   RB2KMIIIF6 ELPASOLITES
   CUBIC PEROVSKITES
   TEMPERATURE FORM
   HIGH-RESOLUTION
Кл.слова (ненормированные):
Crystal atomic structure -- Crystal growth -- Crystal lattices -- Crystallization -- Crystallography -- Ferroelectricity -- Hydrostatic pressure -- Order disorder transitions -- Single crystals -- Thermodynamics -- Elpasolites -- Landau theory -- Perovskite
Аннотация: Many compounds with general chemical formula A2BB?X6 and with tolerance factor value t < 1 crystallize in the elpasolite (ordered perovskite) structure. Different preparative methods have been considered. For example, the Bridgman technique is the most suitable method of growing single crystals of halogenated elpasolites with monoatomic cations. Group-theory and symmetry analyses have allowed us to build a scheme of possible structural distortions connected with octahedral rotations and displacements of ions. Experimental observations have proven that ferroelastic phase transitions occurring most frequently in elpasolites are due to small octahedra tilts. Quantitative analysis allows the possibility of describing these transitions in the framework of the thermodynamic Landau theory. Hydrostatic pressure and the substitution of atoms in different crystallographic sites allow to change significantly the succession and the temperature of phase transitions. The hypothesis of bond stresses is able to predict the possible occurrence of a phase transition for a particular elpasolite and/or the role of the octahedra rotations in the transformation. The mechanism of phase transitions in elpasolites and related compounds has also been considered. One can assume that a displacive mechanism associated with a strong anharmonicity plays a large role in phase transitions occurring in compounds with monoatomic cations. On the other hand, for instance, in cryolites with ammonium cations, the transitions originate from an order-disorder phenomenon. В© 1998 Elsevier Science S.A. All rights reserved.

Scopus
Держатели документа:
L.V. Kirensky Institute of Physics, Krasnoyarsk 660036, Russian Federation
Inst. Chim. Matiere Cond. B., Universite Bordeaux I, 33608, Pessac Cedex, France
Lab. de Phys.-Chim. Molec., Universite Bordeaux I, 33405, Talence Cedex, France

Доп.точки доступа:
Flerov, I. N.; Флёров, Игорь Николаевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Tressaud, A.; Grannec, J.; Couzi, M.
}
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12.

Nonresonant x-ray magnetic scattering on rare-earth iron borates RFe3(BO3)(4) / J. E. Hamann-Borrero [et al.] // Phys. Rev. B. - 2010. - Vol. 82, Is. 9. - Ст. 94411, DOI 10.1103/PhysRevB.82.094411. - Cited References: 38. - This work was supported by the Deustche Forschungsgemeinschaft, through the Forschergruppe FOR520 (Grant No. HE3439/6) and HASYLAB at the Feyerherm from HMI Berlin and specially to Jorg Strempfer from HASYLAB at DESY in Hamburg for valuable discussions. . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
   CROSS-SECTION
   GDFE3(BO3)(4)
   NDFE3(BO3)(4)
   DIFFRACTION
   MNF2
Аннотация: Hard x-ray scattering experiments with a photon energy of 100 keV were performed as a function of temperature and applied magnetic field on selected compounds of the RFe3(BO3)4 family. The results show the presence of several diffraction features, in particular, nonresonant magnetic reflections in the magnetically ordered phase and structural reflections that violate the diffraction conditions for the low-temperature phase P3(1)21 of the rare-earth iron borates. The temperature and field dependence of the magnetic superlattice reflections corroborate the magnetic structures of the borate compounds obtained by neutron diffraction. The detailed analysis of the intensity and scattering cross section of the magnetic reflection reveals details of the magnetic structure of these materials such as the spin domain structure of NdFe3(BO3)(4) and GdFe3(BO3)(4). Furthermore we find that the correlation length of the magnetic domains is around 100 angstrom for all the compounds and that the Fe moments are rotated 53 degrees +/- 3 degrees off from the hexagonal basal plane in GdFe3(BO3)(4).

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Держатели документа:
[Hamann-Borrero, J. E.
Philipp, M.
Kataeva, O.
Geck, J.
Klingeler, R.
Buechner, B.
Hess, C.] IFW Dresden, Leibniz Inst Solid State & Mat Res, D-01171 Dresden, Germany
[Kataeva, O.] Russian Acad Sci, AE Arbuzov Organ & Phys Chem Inst, Kazan 420088, Russia
[Zimmermann, M. V.] Deutsch Elektronen Synchrotron DESY, Hamburger Synchrotronstrahlungslabor HASYLAB, D-22603 Hamburg, Germany
[Klingeler, R.] Univ Heidelberg, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany
[Vasiliev, A.] Moscow MV Lomonosov State Univ, Fac Phys, Low Temp Phys Dept, Moscow 119992, Russia
[Bezmaternykh, L.] Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Leibniz Institute for Solid State and Materials Research, IFW Dresden, 01171 Dresden, Germany
A. E. Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences, Arbuzov Str. 8, Kazan 420088, Russian Federation
Hamburger Synchrotronstrahlungslabor (HASYLAB), Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22603 Hamburg, Germany
Kirchhoff Institute for Physics, University of Heidelberg, Im Neuenheimer Feld 227, D-69120 Heidelberg, Germany
Low Temperature Physics Department, Faculty of Physics, Moscow State University, Moscow 119992, Russian Federation
L. V. Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 660,0,36, Russian Federation

Доп.точки доступа:
Hamann-Borrero, J. E.; Philipp, M.; Kataeva, O.; Zimmermann, M. V.; Geck, J.; Klingeler, R.; Vasiliev, A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Buchner, B.; Hess, C.
}
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13.

Abramova, G. M.
Metal-insulator transition, magnetoresistance, and magnetic properties of 3d-sulfides (Review) / G. M. Abramova, G. A. Petrakovskii // Low Temp. Phys. - 2006. - Vol. 32, Is. 8-9. - P. 725-734 ; Физика низких температур, DOI 10.1063/1.2219495. - Cited References: 74 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
GIANT-MAGNETORESISTANCE
   PHASE-TRANSITION
   ALPHA-MNS
   COLOSSAL MAGNETORESISTANCE
   SINGLE-CRYSTALS
   FES-MNS
   SULFIDES
   FERROMAGNETISM
   SEMICONDUCTORS
   TEMPERATURE
Аннотация: The results of a study of the transport and magnetic properties of some sulfides of 3d elements are reported. The concentration transitions with a change of conductivity type and a change of magnetic order are considered, and the features of the colossal magnetoresistance in FexMn1-xS and CuVxCr1-xS2 solid solutions are discussed.

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Держатели документа:
Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
L. V. Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok 660036, Russian Federation

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Абрамова, Галина Михайловна

}
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14.

Magnetostriction of FexMn1-xS (x=0.27) Crystals / G. M. Abramova [et al.] // JETP Letters. - 2009. - Vol. 90, Is. 3. - P. 207-210, DOI 10.1134/S0021364009150107. - Cited References: 19. - This work was supported by the Siberian Branch, Russian Academy of Sciences, and INTAS, joint project no. 06-1000013-9002. . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
ALPHA-MNS
   SINGLE-CRYSTALS
   TRANSITION
   MOSSBAUER
Аннотация: The magnetostriction of FexMn1-xS (x = 0.27) single crystals in strong magnetic fields up to 120 kOe has been investigated. It has been found that the magnetostriction reaches colossal values (+/-3 x 10(-4)) atypical of compounds of 3d elements. It has been found that the magnetostriction changes sign when varying temperature and magnetic field; this behavior indicates an important role of the spin-phonon interactions in the formation of the magnetic order in solid solutions of iron-manganese sulfides.

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Держатели документа:
[Abramova, G. M.
Petrakovskiy, G.
Bovina, A. F.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Zuberek, R.
Nabialek, A.] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
[Boem, M.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[Sokolov, V.] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Novosibirsk 630090, Russia
[Petrakovskiy, G.] Siberian Fed Univ, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Institute of Physics, Polish Academy of Sciences, PL-02-668 Warsaw, Poland
Institut Laue-Langevin, Grenoble, France
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk 630090, Russian Federation
Siberian Federal University, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Abramova, G. M.; Абрамова, Галина Михайловна; Petrakovskiy, G. A.; Петраковский, Герман Антонович; Zuberek, R.; Nabialek, A.; Boem, M.; Sokolov, V. V.; Соколов В. В.; Bovina, A. F.; Бовина, Ася Федоровна; Siberian Branch, Russian Academy of Sciences; INTAS [06-1000013-9002]
}
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15.

Magnetoresistance anisotropy and scaling in textured high-temperature superconductor Bi1.8Pb0.3Sr1.9Ca2Cu3Ox / D. M. Gokhfel’d [et al.] // Phys. Solid State. - 2015. - Vol. 57, Is. 11. - P. 2145-2150, DOI 10.1134/S1063783415110128. - Cited References: 29 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
ELECTRIC-POWER APPLICATIONS
   TRANSPORT CRITICAL-CURRENT
   T-C
   SINGLE-CRYSTALS
   TAPES
   DISSIPATION
   BOUNDARIES
   DENSITY
   FIELD
Аннотация: The magnetoresistance of the textured high-temperature superconductor (HTSC) Bi1.8Pb0.3Sr1.9Ca2Cu3Ox + Ag has been studied at different directions of the transport current I and external magnetic field H with respect to crystallographic directions of HTSC crystallites. When I and H are oriented along the ab planes of crystallites and φ is the angle between H and I, the anisotropic part of the magnetoresistance follows the functional dependence sin2φ, which is characteristic of vortex flows under Lorentz forces. The magnetoresistance R at H parallel to the c axis of crystallites (H || c) is higher than R at H || ab for both cases of I || c and I || ab. The anisotropy coefficient γ ≈ 2.3 has been estimated from the scaling of the dependences R(H) measured at H || c and H || ab. The inclusion of the magnetic field induced by the transport current allows scaling of the dependences R(H) at different values of I. A qualitative picture of the current flow along the c axis of crystallites in the textured HTSC has been proposed. © 2015, Pleiades Publishing, Ltd.

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Публикация на русском языке Анизотропия и скейлинг магнитосопротивления в текстурированном высокотемпературном сверхпроводнике Bi1.8Pb0.3Sr1.9Ca2Cu3Ox [Текст] / Д. М. Гохфельд [и др.] // Физ. тверд. тела : Физико-технический институт им. А. Ф. Иоффе РАН, 2015. - Т. 57 Вып. 11. - С. 2090-2094

Держатели документа:
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50–38, Krasnoyarsk, Russian Federation
Siberian Federal University, pr. Svobodnyi 79, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Gokhfel'd, D. M.; Гохфельд, Денис Михайлович; Balaev, D. A.; Балаев, Дмитрий Александрович; Semenov, S. V.; Семёнов, Сергей Васильевич; Petrov, M. I.; Петров, Михаил Иванович
}
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16.

Magneto-optical activity of crude oil and its heavy fractions / A. E. Sokolov [et al.] // Opt. Spectrosc. - 2012. - Vol. 112, Is. 5. - P. 755-762, DOI 10.1134/S0030400X12050165. - Cited References: 18. - This work was performed under Interdisciplinary Integration Project no. 118 of the Siberian Branch of the Russian Academy of Sciences (2009-2011). . - ISSN 0030-400X

РУБ Optics + Spectroscopy
Рубрики:
MAGNETIC CIRCULAR-DICHROISM
   SINGLE-CRYSTALS
   SPECTROSCOPY
   EPR
   ABSORBENCY
   PORPHYRIN
   SYSTEMS
Аннотация: We have experimentally studied optical and magneto-optical spectra of solutions of crude oils of different origin and their heavy fractions in the visible spectral range. Magnetic circular dichroism of oil in the wavelength range similar to 550 nm has been revealed. We show that the shape of the spectra of this dichroism depends on the origin of crude oil, with the magnetic dichroism magnitude being proportional to the concentration of the oil in the solution. A comparison of the data of magneto-optical spectroscopy with electron paramagnetic resonance spectra and chemical composition of samples has allowed us to conclude that the observed magneto-optical activity is determined by the occurrence of VO2+ complexes in the oil samples. The revealed magneto-optical activity of crude oil can form the basis of a unique method of analysis of the composition and properties of oils of different origin and heavy fractions thereof.

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Публикация на русском языке Магнитооптическая активность природной нефти и ее тяжелых фракций [Текст] / А. Э. Соколов [и др.] // Оптика и спектроскопия : Наука, 2012. - Т. 112 № 5. - С. 820-827

Держатели документа:
[Sokolov, A. E.
Edelman, I. S.
Zabluda, V. N.
Petrakovskaya, E. A.
Aleksandrovskii, A. S.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Shubin, A. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Trukhan, S. N.
Mart'yanov, O. N.] Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk 630090, Russia

Доп.точки доступа:
Sokolov, A. E.; Соколов, Алексей Эдуардович; Edelman, I. S.; Эдельман, Ирина Самсоновна; Zabluda, V. N.; Заблуда, Владимир Николаевич; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Shubin, A. A.; Trukhan, S. N.; Mart'yanov, O. N.
}
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17.

Magnetic properties of copper metaborate CuB2O4 / G. A. Petrakovskii [et al.] // Low Temp. Phys. - 2002. - Vol. 28, Is. 8-9. - P. 606-612 ; Физика низких температур, DOI 10.1063/1.1511704. - Cited References: 17 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
SINGLE-CRYSTALS
RESONANCE
STATE
Аннотация: The results of experimental research on the magnetic and resonance properties, heat capacity, muon spin relaxation, and neutron scattering of single-crystal copper metaborate CuB2O4 are reviewed. The results of a symmetry analysis and of modeling by the method of the phenomenological thermodynamic potential are presented. The magnetic structure of the crystal in various temperature intervals of the magnetic ordering region is discussed. (C) 2002 American Institute of Physics.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Paul Scherrer Inst, CH-6232 Villigen, Switzerland
Swiss Fed Inst Technol, Lab Neutron Scattering, CH-6232 Villigen, Switzerland
Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
ИФ СО РАН
L. V. Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 660036 Krasnoyarsk, Russian Federation
Laboratory for Neutron Scattering, ETH Zurich, Paul Scherrer Institute, CH-6232 Villigen PSI, Switzerland
Institut Laue-Langevin, 38042 Grenoble, Cedex 9, France

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Pankrats, A. I.; Панкрац, Анатолий Иванович; Popov, M. A.; Balaev, A. D.; Балаев, Александр Дмитриевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vorotynov, A. M.; Воротынов, Александр Михайлович; Sablina, K. A.; Саблина, Клара Александровна; Roessli, B.; Schefer, J.; Amato, A.; Staub, U.; Boehm, M.; Ouladdiaf, B.

}
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18.

Magnetic properties of aerugite Co10Ge3O16 / L. V. Udod [et al.] // Phys. Solid State. - 2007. - Vol. 49, Is. 3. - P. 500-504, DOI 10.1134/S1063783407030201. - Cited References: 8 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
Аннотация: This paper reports on the first study of the temperature and field dependences of the magnetization, heat capacity, and electrical properties of synthesized polycrystalline samples of aerugite Co10Ge3O16, as well as on x-ray diffraction analysis of this compound. It is shown that the cobalt ions in this compound occupy three nonequivalent positions. The results of the experimental and theoretical studies suggest that aerugite is a ferrimagnet with two uncompensated magnetic moments of the cobalt atom per formula unit.

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Держатели документа:
Russian Acad Sci, Siberian Div, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Div, Inst Tomog Ctr, Novosibirsk 630090, Russia
Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
International Tomography Center, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation
Institute of Physics, Polish Academy of Sciences, Warsaw, 02-668, Poland

Доп.точки доступа:
Udod, L. V.; Удод, Любовь Викторовна; Petrakovskii, G. A.; Петраковский, Герман Антонович; Vorotynov, A. M.; Воротынов, Александр Михайлович; Bayukov, O. A.; Баюков, Олег Артемьевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Bovina, A. F.; Бовина, Ася Федоровна; Shvedenkov, Y. G.; Baran, M.; Szymczak, R.
}
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19.

Magnetic circular dichroism and optical absorption in TmAl3(BO3)(4) / A. V. Malakhovskii [et al.] // Phys. Solid State. - 2007. - Vol. 49, Is. 1. - P. 34-38, DOI 10.1134/S1063783407010076. - Cited References: 19 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
   SPECTROSCOPY
   TRANSITIONS
   HUNTITE
   GROWTH
Аннотация: The polarized spectra of absorption and magnetic circular dichroism in a TmAl3(BO3)(4) single crystal are studied in the re-ion of H-3(6) - F-3(4), H-3(6) - F-3(3),and H-3(3) - F-3(2) electronic transitions in e Tm3+ ion. The structure of the spectra is interpreted qualitatively. It is shown that the magnetic circular dichroism of the H-3(6) - F-3(4) transition is determined by the contribution from the splitting of the ground state, whereas the magnetic circular dichroism of the H-3(6) - F-3(3) transition is governed by the contribution from the splitting of an excited state in a trigonal crystal field.

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Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Malakhovskii, A. V.; Малаховский, Александр Валентинович; Sokolov, A. E.; Соколов, Алексей Эдуардович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Temerov, V. L.; Темеров, Владислав Леонидович; Stolbovaya, N. A.; Edelman, I. S.; Эдельман, Ирина Самсоновна
}
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20.

Magnetic circular dichroism analysis of crude oil / I. S. Edelman [et al.] // J. Struct. Chem. - 2016. - Vol. 57, Is. 2. - P. 382-389, DOI 10.1134/S0022476616020207. - Cited References:33. - The work was carried out with the partial support of the grant of the President of the Russian Federation (NSh-2886.2014.2), and in the frameworks of the base budget financing of Kirensky Institute of Physics and Boreskov Institute of Catalysis (Siberian Branch, Russian Academy of Sciences) (V.44.1.15.). . - ISSN 0022-4766. - ISSN 1573-8779

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Physical
Рубрики:
Near-UV/visible spectroscopy
   Electron-spin-resonance
   Asphaltene dispersions
   Single-crystals
   Absorption
   VO2+
   EPR
   FLuorescence
   Aggregation
   Absorbency
Кл.слова (ненормированные):
magnetic circular dichroism (MCD) -- MCD spectroscopy -- absorption spectroscopy of oil
Аннотация: Optical and magneto-optical properties of solutions of crude oil of different origin (i.e., taken from different fields) are studied in the visible and near-UV region of optical emission. Magnetic circular dichroism (MCD) spectra of oil are obtained in the vicinity of wavelengths of ~410 nm, 533 nm, and 576 nm. It is demonstrated that the intensity of the MCD signal depends on the origin of crude oil, and it is proportional to the oil concentration in the solution. The comparison of the magneto-optical spectroscopy data with the chemical composition of samples allows us to conclude that the observed magneto-optical activity is determined by the presence of VO2+ complexes in the oil samples studied. The revealed magneto-optical activity of conventional oil can form a basis of a new method for the analysis of the composition and properties of oil of different origin.

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Публикация на русском языке Исследование природной нефти с помощью спектроскопии магнитного кругового дихроизма [Текст] / И. С. Эдельман [и др.] // Журн. структ. химии. - 2016. - Т. 57 № 2. - С. 394-401

Держатели документа:
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk, Russia.

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Sokolov, A. E.; Соколов, Алексей Эдуардович; Zabluda, V. N.; Заблуда, Владимир Николаевич; Shubin, A. A.; Martyanov, O. N.; Russian Federation [NSh-2886.2014.2]; Kirensky Institute of Physics (Siberian Branch, Russian Academy of Sciences) [V.44.1.15]; Boreskov Institute of Catalysis (Siberian Branch, Russian Academy of Sciences) [V.44.1.15]
}
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