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ALEKSEEV, K. N.
CHAOTIC DYNAMICS IN LIGHT IMPURITY CENTER INTERACTION / K. N. ALEKSEEV, N. V. ALEKSEEVA // Phys. Lett. A. - 1992. - Vol. 162, Is. 1. - P. 82-85, DOI 10.1016/0375-9601(92)90965-O. - Cited References: 26 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary
Рубрики:
QUANTUM OPTICS
CRYSTALS
Аннотация: Interaction of an impurity center in crystal with light and crystal lattice vibrations is considered. Conditions of the transition to Hamiltonian chaos have been obtained for the case of strong and resonant electron-phonon coupling.

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Держатели документа:
Kirensky Institute of Physics, 660036 Krasnoyarsk, Russia, Russian Federation
ИФ СО РАН

Доп.точки доступа:
ALEKSEEVA, N. V.
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    Antiferromagnetic dichroism in a complex multisublattice magnetoelectric CuB2O4 / K. N. Boldyrev [et al.] // Phys. Rev. Lett. - 2015. - Vol. 114, Is. 24. - Ст. 247210, DOI 10.1103/PhysRevLett.114.247210. - Cited References:40. - This study was supported by the Russian Academy of Sciences under the Programs for Basic Research, by the President of the Russian Federation (Grant No. MK-3521.2015.2, K. N. B.), by the Russian Foundation for Basic Research (Grants No. 15-32-20613, K. N. B., and No. 15-02-04222, R. V. P.), and by the Ministry of Education and Science of the Russian Federation (Grant No. 14.B25.0031.25, R. V. P.). . - ISSN 0031. - ISSN 1079-7114
   Перевод заглавия: Антиферромагнитный дихроизм в сложном многоподрешеточном магнетоэлектрике CuB2O4

РУБ Physics, Multidisciplinary
Рубрики:
MAGNETIC SOLITON LATTICE
   COPPER METABORATE
   GYROTROPIC BIREFRINGENCE
   SPECTROSCOPY
   EXCITATIONS
   TRANSITIONS
   CRYSTALS
   Cr2O3
   FIELD
Аннотация: Magnetic control of the crystal chirality was announced by Saito et al. [Phys. Rev. Lett. 101, (2008)] on the ground of experiments in CuB2O4. This claim has raised a sharp dispute in the literature because it seemed to contradict the fundamental symmetry principles. We settle this dispute on the basis of a high-resolution optical spectroscopy study of excitonic transitions in CuB2O4. We find that a large sublattice-sensitive antiferromagnetic linear dichroism (LD) emerges at the Néel temperature TN=21 K and show how it could simulate a “magnetic-field control of the crystal chirality.” We prove that the discovered LD is related microscopically to the magnetic Davydov splitting. This LD is highly sensitive to subtle changes in the spin subsystems, which allowed us to observe a splitting of the phase transition into an incommensurate magnetic phase into two transitions (T∗1=8.5 and T∗2=7.9 K) and to suggest elliptical spiral structures below T∗1, instead of a simple circular helix proposed earlier.
О магнитном контроле кристаллической хиральности сообщил Сайто и др. [Phys. Rev. Lett. 101, 117402 (2008)] на основании экспериментов в CuB2O4. Это требование вызвало резкий спор в литературе, потому что это казалось, противоречат основным принципам симметрии. Мы урегулировать этот спор на основе исследования с помощью оптической спектроскопии высокого разрешения экситонных переходов в CuB2O4. Мы считаем, что большой подрешетко-чувствительный антиферромагнитный линейный дихроизм (LD) возникает при температуре Нееля TN= 21 Kи показываем, как это может имитировать "контроль магнитным полем кристаллической хиральности." Мы докажем, что обнаруженный LD связанс микроскопическим магнитным Давыдовским расщеплением. Этот Л.Д. весьма чувствителен к тонким изменениям в спиновых подсистем, которые позволили нам наблюдать расщепление фазового перехода в несоизмеримы магнитная фаза в двух переходов (T*1= 8,5 и Т*2 = 7,9 К) и предположить эллиптическую спиральную структуру ниже T*1, вместо простой круговой спирали предложенный ранее.

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Держатели документа:
RAS, Inst Spect, Moscow 142190, Russia.
RAS, Ioffe Phys Tech Inst, St Petersburg 194021, Russia.
RAS, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Boldyrev, K. N.; Pisarev, R. V.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Popova, M. N.; Russian Academy of Sciences under the Programs for Basic Research; Russian Federation [MK-3521.2015.2]; Russian Foundation for Basic Research [15-32-20613, 15-02-04222]; Ministry of Education and Science of the Russian Federation [14.B25.0031.25]
}
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BAGAUTDINOV, B. S.
X-RAY-INVESTIGATIONS OF MODULATIONS IN CS2ZNI4 / B. S. BAGAUTDINOV, I. P. ALEKSANDROVA // Solid State Commun. - 1994. - Vol. 90, Is. 12. - P. 817-820, DOI 10.1016/0038-1098(94)90251-8. - Cited References: 8 . - ISSN 0038-1098

РУБ Physics, Condensed Matter
Рубрики:
INCOMMENSURATE PHASES
CRYSTALS
CS2CDI4
Аннотация: The X-ray diffractometer patterns of a reciprocal space have been analyzed in the modulated phases of Cs2ZnI4 crystals. The character of the atomic displacements in the modulation wave has been established. The temperature behaviour of both a modulation wave vector and amplitude has been determined from the position and intensity of satellite reflections.

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Держатели документа:
LV KIRENSKII INST PHYS,660036 KRASNOYARSK,RUSSIA
ИФ СО РАН

Доп.точки доступа:
ALEKSANDROVA, I. P.; Александрова, Инга Петровна
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Calorimetric and dielectric studies of the (NH4)(2)MoO2F4 oxyfluoride / V. D. Fokina [et al.] // Phys. Solid State. - 2010. - Vol. 52, Is. 1. - P. 158-166, DOI 10.1134/S1063783410010282. - Cited References: 22. - This study was supported by the Russian Foundation for Basic Research ( project no. 09-02-00062). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
PHASE-TRANSITIONS
   (NH4)(2)WO2F4
   DIFFRACTION
   MECHANISM
   CRYSTALS
Аннотация: The temperature dependences of the heat capacity, dielectric properties, and response to an external pressure and an electric field for the (NH4)(2)MoO2F4 oxyfluoride (space group Cmcm, Z = 4) have been studied. A comparative analysis of the data on the entropy of phase transitions, p-T phase diagrams, permittivity, and anomalous heat capacity in combination with the results of previous studies of the related compounds (NH4)(2)WO2F4 and (ND4)(2)WO2F4 has made it possible to establish that both [MO2F4](2-) anions and ammonium groups play a substantial role in the mechanism and nature of the structural transformations.

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Держатели документа:
[Fokina, V. D.
Bogdanov, E. V.
Bondarev, V. S.
Flerov, I. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Fokina, V. D.
Pogorel'tsev, E. I.
Bondarev, V. S.
Flerov, I. N.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Laptash, N. M.] Russian Acad Sci, Far Eastern Branch, Inst Chem, Vladivostok 690022, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, pr. Svobody 79, Krasnoyarsk 660041, Russian Federation
Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok 690022, Russian Federation

Доп.точки доступа:
Fokina, V. D.; Фокина, Валентина Дмитриевна; Bogdanov, E. V.; Богданов, Евгений Витальевич; Pogorel'tsev, E. I.; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Flerov, I. N.; Флёров, Игорь Николаевич; Laptash, N. M.
}
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Cascade of phase transitions in GdFe3(BO3)(4) / R. Z. Levitin [et al.] // JETP Letters. - 2004. - Vol. 79, Is. 9. - P. 423-426, DOI 10.1134/1.1776236. - Cited References: 8 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
CRYSTALS
ND
Аннотация: Cascade of phase transitions in GdFe3(BO3)(4) at 156, 37, and 9 K has been detected by specific heat measurements and further studied by Raman scattering and Nd3+ spectroscopic probe method. A weakly first-order structural phase transition at 156 K is followed by a second-order antiferromagnetic ordering phase transition at 37 K and a first-order spin-reorientational phase transition at 9 K. (C) 2004 MAIK "Nauka / Interperiodica".

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Держатели документа:
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119992, Russia
Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Levitin, R. Z.; Popova, E. A.; Chtsherbov, R. M.; Vasiliev, A. N.; Popova, M. N.; Chukalina, E. P.; Klimin, S. A.; van Loosdrecht, PHM; Fausti, D.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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Chukalina, E. P.
Spectroscopic study of magnetic phase transitions in NdxGd1-xFe3(BO3)(4) / E. P. Chukalina, L. N. Bezmaternykh // Phys. Solid State. - 2005. - Vol. 47: 12th Feofilov Workshop on Spectroscopy of Crystal Activated by Rare-Earth and Transition-Metal Ions (SEP 22-25, 2004, Yekaterinburg, RUSSIA), Is. 8. - P. 1528-1531, DOI 10.1134/1.2014507. - Cited References: 10 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
CRYSTALS
ND
Аннотация: Magnetic ordering and spin reorientation in iron borates NdxGd1 - xFe3(BO3)(4) (x = 0.01, 0.04, 0.25, 1.0) are studied using a rare-earth spectroscopic probe. (c) 2005 Pleiades Publishing, Inc.

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Держатели документа:
Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Oblast, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russian Federation
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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Effect of cation substitution in fluorine-oxygen molybdates (NH4)(2-x) A (x) MoO2F4 / E. V. Bogdanov [et al.] // Phys. Solid State. - 2011. - Vol. 53, Is. 2. - P. 303-308, DOI 10.1134/S1063783411020065. - Cited References: 11. - This study was supported by the Russian Foundation for Basic Research (project no. 09-02-00062) and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (project no. NSh-1011.2008.2). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
PHASE-TRANSITIONS
   CRYSTALS
   (NH4)(2)WO2F4
   DIFFRACTION
   OXYFLUORIDE
   MECHANISM
   DISORDER
Аннотация: Thermophysical and structural studies of (NH4)(2 - x) A (x) MoO2F4 (A = Cs, Rb, K) solid solutions of oxyfluorides have been performed. The character of the influence of cation substitutions on the stability of the initial phase (space group Cmcm) and on the mechanism of phase transitions has been elucidated.

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Держатели документа:
[Bogdanov, E. V.
Vasil'ev, A. D.
Flerov, I. N.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Vasil'ev, A. D.
Flerov, I. N.] Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660074, Russia
[Laptash, N. M.] Russian Acad Sci, Inst Chem, Far Eastern Branch, Vladivostok 690022, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, ul. Kirenskogo 28, Krasnoyarsk 660074, Russian Federation
Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok 690022, Russian Federation

Доп.точки доступа:
Bogdanov, E. V.; Богданов, Евгений Витальевич; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Flerov, I. N.; Флёров, Игорь Николаевич; Laptash, N. M.
}
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Enhancing of magnetic flux pinning in YBa2Cu3O7-x/CuO granular composites / A. V. Ushakov [et al.] // J. Appl. Phys. - 2015. - Vol. 118, Is. 2. - Ст. 023907, DOI 10.1063/1.4926549. - Cited References: 27. - This work was supported in part by the Ministry of Education and Science of the Russian Federation (Project No. 11.370.2014/K). . - ISSN 0021-8979

РУБ Physics, Applied
Рубрики:
HIGH-TEMPERATURE SUPERCONDUCTORS
   T-C SUPERCONDUCTORS
   CRITICAL CURRENTS
   GRAIN-BOUNDARIES
   CRYSTALS
   DEFECTS
Аннотация: This paper shows that the combination of self-assembled structures in the form of "whiskers" and nanoparticles, which appear as a result of the joint sintering powders YBa2Cu3O7-x and arc nanopowders CuO, leads to a significant increase in the current density and the appearance of the peak effect in strong magnetic fields range. Very high critical current density appears from a complex vortex pinning, where the defects in the form of "whiskers" provides more energy of pinning, and nanoparticles inhibit the flux creep. Regulation of the morphology of such structures can be achieved by simple change of the concentration of nanodispersed additives. It is shown that the optimal additive is CuO equal to 20 wt. %. © 2015 AIP Publishing LLC.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Ushakov, A. V.; Karpov, I. V.; Lepeshev, A. A.; Лепешев, Анатолий Александрович; Petrov, M. I.; Петров, Михаил Иванович; Ministry of Education and Science of the Russian Federation [11.370.2014/K]
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Experimental and theoretical methods to study structural phase transition mechanisms in K3WO3F3 oxyfluoride / A. S. Krylov [et al.] // J. Solid State Chem. - 2014. - Vol. 218. - P. 32-37, DOI 10.1016/j.jssc.2014.05.028. - Cited References: 21. - The Authors are grateful to Prof. Zinenko V.I. for constructive discussion of the results. The work has been done with financial support of the Russian Foundation for Basic Research projects nos. 4828.2012.2, 12-02-31205; Federal Special Program "Scientific and scientific-pedagogical staff of innovative Russia" project no. 8379. . - ISSN 0022-4596. - ISSN 1095-726X

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Physical
Рубрики:
LATTICE-DYNAMICS
   RAMAN-SCATTERING
   ELPASOLITE
   (NH4)3WO3F3
   SPECTROSCOPY
   CRYSTALS
Кл.слова (ненормированные):
Raman spectroscopy -- IR spectroscopy -- NMR spectroscopy -- High hydrostatic pressure -- Oxyfluorides -- Lattice dynamics calculations
Аннотация: The results of structural phase transitions mechanisms study in K3WO3F3oxyfluoride are represented by different experimental and theoretical methods. The structural phase transition anomalies at T1=452 K and T2=414 K of Raman and IR spectra have been analyzed. Using vibrational spectroscopy methods, the NMR-experiment has been done to clarify the nature of found phase transitions: displacive types or order-disorder types. The model of “disordered” crystal was proposed, and the results of lattice dynamics calculation in frameworks of the generalized Gordon–Kim method of ordered (R3) and “disordered” crystals were compared. The high pressure phases were studied by the Raman technique too.

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Branch, VS Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Sofronova, S. N.; Софронова, Светлана Николаевна; Kolesnikova, E. M.; Колесникова, Евгения Михайловна; Ivanov, Y. N.; Иванов, Юрий Николаевич; Sukhovsky, A. A.; Суховский, Андрей Андреевич; Goryainov, S. V.; Ivanenko, A. A.; Иваненко, Александр Анатольевич; Shestakov, N. P.; Шестаков, Николай Петрович; Kocharova, A. G.; Кочарова, Алла Георгиевна; Vtyurin, A. N.; Втюрин, Александр Николаевич; 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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10.

Experimental implementation of tunable hybrid Tamm-microcavity modes / P. S. Pankin, V. S. Sutormin, V. A. Gunyakov [et al.] // Appl. Phys. Lett. - 2021. - Vol. 119, Is. 16. - Ст. 161107, DOI 10.1063/5.0067179. - Cited References: 60. - The authors are grateful to M. N. Krakhalev for helpful discussions. Electrical control of hybrid modes was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research, Project No. 19-42-240004. Temperature control of hybrid modes was funded by Russian Foundation for Basic Research, Project No. 19-52-52006 and No. MOST 108-2923-E-009-003-MY3, Taiwan. P. S. Pankin is grateful for the support of the President of the Russian Federation under Grant No. MK-4012.2021.1.2. This study was supported by the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center KSC SB RAS . - ISSN 0003-6951. - ISSN 1077-3118

РУБ Physics, Applied
Рубрики:
STATES
CRYSTALS
LAYER
Аннотация: Mode hybridization is a unique way to manipulate the mode inside a fixed cavity or at interface. For example, Tamm plasmon-polariton at solid interface can be spectrally shifted without tuning the interface. Experimental implementation of tunable hybrid Tamm-microcavity modes is reported. The hybrid modes are excited in a one-dimensional photonic crystal bounded with a gold layer by attaching a nematic liquid crystal microcavity. Coupling between Tamm plasmon-polariton and microcavity modes leads to repulsion of their dispersion curves controlled by the refractive index of a liquid crystal and the polarization of incident light. Effective tuning of hybrid modes through heating or applying an external electric field to the liquid crystal layer is demonstrated. The experimentally measured strength coupling value between Tamm and microcavity modes was 20.7 meV.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
AO NPP Radiosvyaz, Krasnoyarsk 660021, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.
Natl Yang Ming Chiao Tung Univ, Tainan 71150, Taiwan.

Доп.точки доступа:
Pankin, P. S.; Панкин, Павел Сергеевич; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Zelenov, F. V.; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Masyugin, A. N.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Baron, F. A.; Барон, Филипп Алексеевич; Chen, K. P.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk Territory; Krasnoyarsk Region Science and Technology Support Fund [19-42-240004]; Russian Foundation for Basic Research, TaiwanRussian Foundation for Basic Research (RFBR) [19-52-52006, MOST 108-2923-E-009-003-MY3]; Russian FederationRussian Federation [MK-4012.2021.1.2]; Krasnoyarsk Regional Center of Research Equipment of Federal Research Center KSC SB RAS
}
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11.

    Ferroelastic phase transitions in fluorides with cryolite and elpasolite structures / I. N. Flerov [et al.] // Crystallogr. Rep. - 2004. - Vol. 49, Is. 1. - P. 100-107, DOI 10.1134/1.1643969. - Cited References: 43 . - ISSN 1063-7745
Рубрики:
NUCLEAR MAGNETIC-RESONANCE
   THERMODYNAMIC PROPERTIES
   RB2KMIIIF6 ELPASOLITES
   NEUTRON-DIFFRACTION
   CRYSTALS
   PEROVSKITES
   DIAGRAM
   SC
   RB2KGAXSC1-XF6
   SCATTERING
Аннотация: The ferroelastic phase transitions are investigated in several series of fluoride crystals belonging to the elpasolite and cryolite families (space group Fm (3) over barm) with the general formula A(2)BB'F-6. The influence of the size and shape of cations and anions on the entropy and the mechanism of structural distortions is discussed. (C) 2004 MAIK "Nauka/Interperiodica".

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Публикация на русском языке Сегнетоэластические фазовые переходы во фторидах со структурой криолита и эльпасолита [Текст] / И. Н. Флеров [и др.] // Кристаллография. - 2004. - Т. 49 Вып. 1. - С. 107-114

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
Inst Chim Mat Condensee Bordeaux, F-33608 Pessac, France
ИФ СО РАН

Доп.точки доступа:
Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Tressaud, A.; Fokina, V. D.; Фокина, Валентина Дмитриевна
}
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12.

Flerov, I. N.
Calorimetric investigations of phase transitions in the cryolites (NH4)(3)Ga1-xScxF6 (x = 1.0, 0.1, 0) / I. N. Flerov, M. V. Gorev, T. V. Ushakova // Phys. Solid State. - 1999. - Vol. 41, Is. 3. - P. 468-473, DOI 10.1134/1.1130805. - Cited References: 19 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
FERROELASTICS
   ELPASOLITES
   CRYSTALS
   PRESSURE
Аннотация: The specific heat of the cryolites (NH4)(3)Ga1-xScxF6 with x=1.0, 0.1, and 0 was measured. The thermodynamic parameters of the phase transitions were determined. A previously unknown phase transition was found in the scandium compound at T=243 K. (C) 1999 American Institute of Physics. [S1063-7834(99)03003-8].

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Публикация на русском языке Флеров, Игорь Николаевич. Калориметрические исследования фазовых переходов в криолитах (NH4)3Ga1-xScxF6 (x=1.0, 0.1, 0) [Текст] / И. Н. Флеров, М. В. Горев, Т. В. Ушакова // Физ. тверд. тела. - Санкт-Петербург, 1999. - Т. 41 Вып. 3. - С. 523-528

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Ushakova, T. V.; Флёров, Игорь Николаевич
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13.

Flerov, I. N.
Heat capacity and phase transitions in NH4LiSO4, Cs-x(NH4)(1-x) LiSO4, and RbLiSO4 / I. N. Flerov, A. V. Kartashev, V. A. Grankina // Phys. Solid State. - 2005. - Vol. 47, Is. 4. - P. 720-728, DOI 10.1134/1.1913987. - Cited References: 29 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
ROOM-TEMPERATURE
   MONTE-CARLO
   LINH4SO4
   SUBSTITUTION
   CRYSTALS
   SULFATE
   CSLISO4
Аннотация: The heat capacity of NH4LiSO4, RbLiSO4, and Cs-x(NH4)(1 - x) LiSO4 crystals and its behavior over a broad temperature range including the phase transition regions were studied. The entropy changes corresponding to structural transformations in these crystals were found not to be characteristic of straightforward ordering of structural blocks. The results obtained are discussed in terms of phenomenological theory and model concepts. (C) 2005 Pleiades Publishing, Inc.

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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, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kartashev, A. V.; Карташев, Андрей Васильевич; Grankina, V. A.; Флёров, Игорь Николаевич
}
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14.

Flerov, I. N.
Thermodynamic properties and phase-transitions in halide perovskitelike ferroelastics / I. N. Flerov, M. V. Gorev // Izv. Akad. Nauk Ser. Fiz. - 1995. - Vol. 59, Is. 9. - P. 48-53. - Cited References: 28 . - ISSN 1026-3489

РУБ Physics, Multidisciplinary
Рубрики:
HYDROSTATIC-PRESSURE
   CRYSTALS
   RB3CD2CL7
   RBALF4
   CSSCF4

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Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Флёров, Игорь Николаевич
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15.

Gorev, M. V.
Thermodynamic properties and p-T phase diagrams of (NH4)(3)M3+F6 cryolites (M3+: Ga, Sc) / M. V. Gorev, I. N. Flerov, A. . Tressaud // J. Phys.: Condens. Matter. - 1999. - Vol. 11, Is. 39. - P. 7493-7500, DOI 10.1088/0953-8984/11/39/306. - Cited References: 19 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
TRANSITIONS
CRYSTALS
Аннотация: Calorimetric and high pressure experiments are used to establish thermodynamic features of (NH4)(3)M3+F6 cryolites with M3+: Ga, Sc as they undergo one and three structural phase transitions, respectively. The heat capacity measurements performed between 80 K and 370 K, using an adiabatic calorimeter, have shown that all phase transitions under study are first order with different closeness to the tricritical point. The total entropy change in the Sc compound connected with the successive transformations is almost equal to the entropy change in the Ga cryolite. The effect of hydrostatic pressure has been studied up to 0.6 GPa, using differential thermographic analysis. The p-T phase diagrams of both cryolites were found to be rather complicated, including triple points. The experimental results are considered as connected with order-disorder phase transitions.

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Держатели документа:
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Univ Bordeaux 1, CNRS, Inst Chim Mat Condensee, F-33608 Pessac, France
ИФ СО РАН
L V Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation
Inst. Chim. Matiere Cond. Bordeaux, CNRS, Universite Bordeaux I, 33608 Pessac Cedex, France

Доп.точки доступа:
Flerov, I. N.; Флёров, Игорь Николаевич; Tressaud, A.; Горев, Михаил Васильевич
}
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16.

HEAT-CAPACITY MEASUREMENT OF THE SUCCESSIVE PHASE-TRANSITIONS IN CS2ZNI4 / J. J. MELERO [et al.] // Solid State Commun. - 1995. - Vol. 95, Is. 4. - P. 201-206, DOI 10.1016/0038-1098(95)00261-8. - Cited References: 20 . - ISSN 0038-1098

РУБ Physics, Condensed Matter
Рубрики:
INCOMMENSURATE PHASE
   SEQUENCE
   CRYSTALS
   CS2CDI4
Кл.слова (ненормированные):
FERROELECTRICS -- HEAT CAPACITY -- PHASE TRANSITIONS -- INCOMMENSURATE PHASES
Аннотация: The heat capacity of a Cs2ZnI4 single crystal has been measured by means of AC calorimetry. Three anomalies have been detected corresponding to a normal to inconmensurate phase transition at T-I = 116.9+/-0.1 K, an incommensurate to commensurate lock-in transition at T-L = 107.58+/-0.05 K, and a structural transition from a commensurate orthorhombic to a monoclinic phase at T-C = 93.77+/-0.05 K with thermal hysteresis. The lock-in transition has the peculiarity of being discontinuous but not showing any measurable hysteresis. After comparison with the Landau model predictions for the heat capacity, derived for the k(Delta) = (1/2 + Delta)a* case, it is concluded that Cs2ZnI4 lies close to the Lifschitz point of coexistence of the normal, incommensurate and commensurate phases.

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Держатели документа:
RUSSIAN ACAD SCI,LV KIRENSKY PHYS INST,SIBERIAN BRANCH,KRASNOYARSK 660036,RUSSIA
Instituto de Ciencia de Materiales de Aragon. C.S.I.C. - Universidad de Zaragoza, 50009 Zaragoza. Spain.
ИФ СО РАН

Доп.точки доступа:
MELERO, J. J.; BARTOLOME, J.; BURRIEL, R.; ALEKSANDROVA, I. P.; Александрова, Инга Петровна; PRIMAK, S.
}
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17.

High-Temperature Heat Capacity of Y2.9Ho0.1Al5O12 / V. M. Denisov [et al.] // Phys. Solid State. - 2013. - Vol. 55, Is. 4. - P. 692-695, DOI 10.1134/S1063783413040082. - Cited References: 21 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
CRYSTALS
GARNETS
Аннотация: This paper presents data on the heat capacity of Y2.9Ho0.1Al5O12 as a function of temperature (360-1020 K). The experimental data obtained are used to derive the thermodynamic functions of the oxide compound.

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Публикация на русском языке Высокотемпературная теплоемкость Y2.9Ho0.1Al5O12 // Физика твердого тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2013. - Т. 55, № 4. - С. 636-638. - ISSN 0367-3294

Держатели документа:
Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Krasnoyarsk 660025, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia

Доп.точки доступа:
Denisov, V. M.; Denisova, L. T.; Irtyugo, L. A.; Patrin, G. S.; Патрин, Геннадий Семёнович; Volkov, N. V.; Волков, Никита Валентинович; Chumilina, L. G.
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18.

Hydrostatic pressure-induced phase transitions in RbMnCl3: Raman spectra and lattice dynamics / A. N. Vtyurin [et al.] // Phys. Solid State. - 2004. - Vol. 46, Is. 7. - P. 1301-1310, DOI 10.1134/1.1778456. - Cited References: 16 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
CRYSTALS
SPECTROSCOPY
Аннотация: Raman scattering spectra of RbMnCl3 are measured at room temperature under high hydrostatic pressure. The results are interpreted based on first principles lattice dynamics calculations. The experimental data obtained correlate with the calculations in the low frequency domain but disagree slightly in the region of high-frequency vibrations. The transition from the hexagonal to the cubic perovskite phase observed earlier (near 0.7 GPa) was confirmed, and new transitions to lower symmetry distorted phases were discovered (at 1.1 and 5 GPa). (C) 2004 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Russian Acad Sci, Joint Inst Geol Geophys & Mineral, Siberian Div, Novosibirsk 630090, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Jt. Inst. Geol., Geophys./Mineral., Siberian Division, Russian Academy of Sciences, pr. Nauki 3, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Vtyurin, A. N.; Втюрин, Александр Николаевич; Goryainov, S. V.; Zamkova, N. G.; Замкова, Наталья Геннадьевна; Zinenko, V. I.; Зиненко, Виктор Иванович; Krylov, A. S.; Крылов, Александр Сергеевич; Krylova, S. N.; Крылова, Светлана Николаевна; Shefer, A. D.
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19.

Ignatchenko, V. A.
Crossing resonance of stochastically interacting wave fields / V. A. Ignatchenko, D. S. Polukhin // J. Exp. Theor. Phys. - 2013. - Vol. 116, Is. 2. - P. 206-222, DOI 10.1134/S1063776113020118. - Cited References: 42. - We are grateful to V. V. Val'kov and A. F. Sadreev for useful discussions. This work was supported by the Presidium of the Russian Academy of Sciences (Program no. 24.29), the Dynasty Foundation (Program for Support of Young Scientists), the Federal Target Program (state contract no. 14.B37.21.0730), and the Special Program for Siberian Federal University of the Ministry of Education and Science of the Russian Federation. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
CRYSTALS
   SYSTEMS
   ALLOYS
   MEDIA
Аннотация: The dynamic susceptibilities (Green's functions) of the system of two interacting wave fields of different physical natures with a stochastically inhomogeneous coupling parameter between them with zero mean value have been examined. The well-known self-consistent approximation taking into account all diagrams with noncrossing correlation/interaction lines has been generalized to the case of stochastically interacting wave fields. The analysis has been performed for spin and elastic waves. The results obtained taking into account the processes of multiple scattering of waves from inhomogeneities are significantly different from those obtained for this situation earlier in the Bourret approximation [R.C. Bourret, Nuovo Cimento 26, 1 (1962)]. Instead of frequencies degeneracy removal in the wave spectrum and the splitting of resonance peaks of dynamic susceptibilities, a wide single-mode resonance peak should be observed at the crossing point of the unperturbed dispersion curves. The fine structure appears at vertices of these wide peaks in the form of a narrow resonance on the Green's-function curve of one field and a narrow antiresonance on the vertex of the Green's-function curve of the other field.

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Публикация на русском языке Кроссинг-резонанс стохастически взаимодействующих волновых полей. - [S. l. : s. n.]

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Polukhin, D. S.; Полухин, Дмитрий Сергеевич; Игнатченко, Вальтер Алексеевич
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20.

Ignatchenko, V. A.
Effects of long-wave inhomogeneities of the exchange and elastic force constants in the framework of the coherent potential approximation / V. A. Ignatchenko, V. A. Felk // Phys. Rev. B. - 2006. - Vol. 74, Is. 17. - Ст. 174415, DOI 10.1103/PhysRevB.74.174415. - Cited References: 14 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
CRYSTALS
MODEL
Аннотация: The formalism of averaged Green's functions in the continuum is developed for spin waves in ferromagnets with inhomogeneities of the exchange constant and elastic waves in media with inhomogeneities of the force constant. The integral self-consisted equation in the coherent potential approximation is developed for taking into account effects of inhomogeneities of these nonlocal characteristics of the material on the wave spectrum in it. The obtained general results are applied to the study of effects of one-dimensional inhomogeneities of the exchange constant on the wave spectrum in a ferromagnet.

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Держатели документа:
SB RAS, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
L. V. Kirensky Institute of Physics SB RAS, 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Felk, V. A.; Игнатченко, Вальтер Алексеевич
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