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1.


   
    Features of the behavior of the barocaloric effect near ferroelectric phase transition close to the tricritical point / E. A. Mikhaleva, I. N. Flerov, M. V. Gorev [et al.] // Crystals. - 2020. - Vol. 10, Is. 1. - Ст. 51, DOI 10.3390/cryst10010051. - Cited References: 28. - The reported study was supported by the Russian Science Foundation (project no. 19-72-00023) . - ISSN 2073-4352
Кл.слова (ненормированные):
polymorphic phase transformation -- phase diagram -- order-disorder phenomena -- entropy -- barocaloric effect
Аннотация: A detailed study of the effect of temperature and pressure on heat capacity, entropy and hysteresis phenomena near the ferroelectric phase transition in ammonium sulfate (AS) was performed. An analysis of experimental results within the framework of the phenomenological theory showed that taking into account the temperature-dependent part of the anomalous entropy leads to a significant increase in the barocaloric effect (BCE). The maximum values of extensive and intensive BCE near the tricritical point are outstanding: ΔSmaxBCE≈85 J/kgK, ΔTmaxAD≈12 K and can be achieved at low pressure ∼0.5 GPa.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russia
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, 660074 Krasnoyarsk, Russia
Institute of Engineering Systems and Energy, Krasnoyarsk State Agrarian University, 660049 Krasnoyarsk, Russia

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Bondarev, I. A.; Бондарев, Илья Александрович; Bogdanov, E. V.; Богданов, Евгений Витальевич
}
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2.


   
    Unusual magnetic behavior of polymorph iron oxide ϵ-Fe2O3 nanoparticles: magnetic phase diagram and surface effects / D. A. Balaev, A. A. Dubrovskiy, S. V. Semenov [et al.] // Euro-asian symposium "Trends in magnetism" (EASTMAG-2019) : Book of abstracts / чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст. J.I2. - P. 164-165. - Cited References: 15. - This work was supported by the Russian Science Foundation, project no. 17-12-01111 . - ISBN 978-5-9500855-7-4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Boreskov Institute of Catalysis, SB RAS

Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Balaev, D. A.; Балаев, Дмитрий Александрович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Semenov, S. V.; Семёнов, Сергей Васильевич; Krasikov, A. A.; Красиков, Александр Александрович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Bayukov, O. A.; Баюков, Олег Артемьевич; Yakushkin, S. S.; Kirillov, V. L.; Bukhtiyarova, G. A.; Martyanov, O. A.; Российская академия наук; Уральское отделение РАН; Институт физики металлов им. М. Н. Михеева Уральского отделения РАН; Уральский федеральный университет им. первого Президента России Б.Н. Ельцина; Российский фонд фундаментальных исследований; Euro-Asian Symposium "Trends in MAGnetism"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
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3.


    Shinkorenko, A. S.
    Ab initio investigation of physical properties and phase diagram of magnetic tetraborate crystals M+2B4O7 / A. S. Shinkorenko, V. I. Zinenko, M. S. Pavlovskii // Euro-asian symposium "Trends in magnetism" (EASTMAG-2019) : Book of abstracts / чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст. K.P20. - P. 354. - Cited References: 4 . - ISBN 978-5-9500855-7-4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia

Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Zinenko, V. I.; Зиненко, Виктор Иванович; Pavlovskii, M. S.; Павловский, Максим Сергеевич; Шинкоренко, Алексей Сергеевич; Российская академия наук; Уральское отделение РАН; Институт физики металлов им. М. Н. Михеева Уральского отделения РАН; Уральский федеральный университет им. первого Президента России Б.Н. Ельцина; Российский фонд фундаментальных исследований; Euro-Asian Symposium "Trends in MAGnetism"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
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4.


   
    Conventional and inverse barocaloric effects in ferroelectric NH4HSO4 / M. V. Gorev [et al.] // J. Alloys Compd. - 2019. - Vol. 806. - P. 1047-1051, DOI 10.1016/j.jallcom.2019.07.273. - Cited References: 22 . - ISSN 0925-8388
Кл.слова (ненормированные):
Polymorphic phase transformation -- Phase diagram -- Order–disorder phenomena -- Entropy -- Barocaloric effect
Аннотация: In this study, the conventional and inverse barocaloric effects (BCE) in ferroelectric NH4HSO4 are reported. Maximum extensive and intensive BCE near order–disorder phase transition can be achieved at low pressure p≤0.1 GPa. Large thermal expansion of the crystal lattice plays a very important role in the developing conventional BCE and conversation between BCE of different sign in the narrow temperature range.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Engineering Systems and Energy, Krasnoyarsk State Agrarian University, Krasnoyarsk, 660049, Russian Federation

Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Flerov, I. N.; Флёров, Игорь Николаевич; Bogdanov, E. V.; Богданов, Евгений Витальевич
}
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5.


   
    Flux pinning mechanisms and a vortex phase diagram of tin-based inverse opals / A. A. Bykov [et al.] // Supercond. Sci. Technol. - 2019. - Vol. 32, Is. 11. - Ст. 115004, DOI 10.1088/1361-6668/ab3db7. - Cited References: 31. - The work was supported by the Russian Foundation for Basic Research, project no. 17-72-10067. . - ISSN 0953-2048. - ISSN 1361-6668
   Перевод заглавия: Механизмы пиннинга магнитного потока и вихревая фазовая диаграмма оловянных инвертированных опалов
РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
SUPERCONDUCTIVITY
Кл.слова (ненормированные):
tin-based inverse opal -- superconductivity -- magnetic flux pinning -- three-dimensional inverse nanostructures
Аннотация: Three-dimensional periodic tin structures were synthesized by filling pores in silicon opals with a sphere diameter of 194 nm (Sn190) and 310 nm (Sn300). The samples were examined by the ultra-small-angle x-ray diffraction method, energy dispersive x-ray microanalysis and scanning electron microscopy. It was found that the inverse opal structure consists of tin nanoparticles inscribed in octahedral and tetrahedral pores with diameters of 128 nm and 70 nm for the sample Sn300, and 80 nm and 42 nm for the sample Sn190. The study of the magnetic properties of the samples by SQUID magnetometry showed that magnetization reversal curves exhibit hysteretic behavior. The mechanisms of magnetic flux pinning in the samples depend on the size of the tin nanoparticles. Tin nanoparticles in Sn300 behave like a classical type-I superconductor. The hysteretic behavior of the magnetization reversal curves at low magnetic fields is due to the formation of a network of superconducting contours in Sn300. These superconducting contours effectively trap the magnetic flux. The octahedral tin nanoparticles in Sn190 remain type-I superconductors, but smaller tetrahedral particles behave like type-II superconductors. Type-I and II superconducting particles in Sn190 lead to the coexistence of different mechanisms of flux pinning These are flux trapping by superconducting contours at low magnetic fields and flux pinning by tetrahedral particles due to the surface barrier at high magnetic fields.

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Держатели документа:
NRC KI, Petersburg Nucl Phys Inst, Gatchina, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia.
St Petersburg State Univ, St Petersburg, Russia.
Univ Texas Dallas, Alan G MacDiarmid NanoTech Inst, Dallas, TX USA.

Доп.точки доступа:
Bykov, A. A.; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Savitskaya, N. E.; Terentjev, K. Yu.; Терентьев, Константин Юрьевич; Popkov, S. I.; Попков, Сергей Иванович; Mistonov, A. A.; Grigoryeva, N. A.; Zakhidov, A.; Grigoriev, S., V; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [17-72-10067]
}
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6.


   
    Thermal conductivity and magnetic phase diagram of CuB2O4 / T. Kawamata [et al.] // J. Phys. Soc. Jpn. - 2019. - Vol. 88, Is. 11. - Ст. 114708, DOI 10.7566/JPSJ.88.114708. - Cited References: 42. - This work was supported by a Grant-in-Aid for Scientific Research of the Ministry of Education, Culture Sports, Science and Technology, Japan, (Grant Number 17038002) and also by CREST of Japan Science and Technology Corporation. . - ISSN 0031-9015. - ISSN 1347-4073
Аннотация: We have measured temperature and magnetic field dependences of the thermal conductivity along the c-axis, κc, and that along the [110] direction, κ110, of CuB2O4 single crystals in zero field and magnetic fields along the c-axis and along the [110] direction. It has been found that the thermal conductivity is nearly isotropic and very large in zero field and that the thermal conductivity due to phonons is dominant in CuB2O4. The temperature and field dependences of κc and κ110 have markedly changed at phase boundaries in the magnetic phase diagram, which has been understood to be due to the change of the mean free path of phonons caused by the change of the phonon-spin scattering rate at the phase boundaries. It has been concluded that thermal conductivity measurements are very effective for detecting magnetic phase boundaries.

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Держатели документа:
Department of Applied Physics, Tohoku University, Sendai 980-8579, Japan
Department of Engineering and Applied Sciences, Sophia University, Chiyoda, Tokyo 102-8554, Japan
Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan
Department of Applied Physics, Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan
Institute of Physics, Siberian Branch of the Russian Academy of Science, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Kawamata, T.; Sugawara, N.; Haidar, S. M.; Adachi, T.; Noji, T.; Kudo, K.; Kobayashi, N.; Fujii, Yu.; Kikuchi, H.; Chiba, M.; Petrakovskii, G. A.; Петраковский, Герман Антонович; Popov, M. A.; Попов, Михаил Александрович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Koike, Yo.
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7.


   
    Potassium and thallium conductors with a trigonal structure in the M2MoO4–Cr2(MoO4)3–Hf(MoO4)2 (M = K, Tl) systems: Synthesis, structure, and ionic conductivity / V. G. Grossman, M. S. Molokeev, B. G. Bazarov, J. G. Bazarova // J. Alloys Compd. - 2021. - Vol. 873. - Ст. 159828, DOI 10.1016/j.jallcom.2021.159828. - Cited References: 62. - The work was supported by Basic Project of BINM SB RAS № 0273-2021-0008 . Research was conducted using equipment of the CCU BINM SB RAS (Ulan-Ude, Russia). Structural analysis of materials in this study was partly supported by the Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation . - ISSN 0925-8388
   Перевод заглавия: Калиевые и таллиевые проводники с тригональной структурой в системах M2MoO4-Cr2(MoO4)3–Hf(MoO4)2 (M = K, Tl): синтез, структура и ионная проводимость
Кл.слова (ненормированные):
Synthesis -- Thallium -- Potassium -- Molybdates -- Phase diagram -- DSC -- Conducting material
Аннотация: The triple molybdates M5CrHf(MoO4)6 (M = K, Tl) and TlCrHf0.5(MoO4)3 were found upon studying the corresponding ternary molybdate systems M2MoO4–Cr2(MoO4)3–Hf(MoO4)2 (M = K, Tl) in the subsolidus region using X-ray powder diffraction. The crystal structures of M5CrHf(MoO4)6 (M = K, Tl) and TlCrHf0.5(MoO4)3 are refined by Rietveld method. M5CrHf(MoO4)6 (M = K, Tl) crystallizes in space group Rc with unit cell parameters: a = b = 10.45548 (5), c = 37.24614 (3) Å, V = 3526.14 (4) Å3, Z = 6 for K5CrHf(MoO4)6 and a = b = 10.53406 (12), c = 37.6837 (5) Å, V = 3621.39 (9) Å3, Z = 6 for Tl5CrHf(MoO4)6. TlCrHf0.5(MoO4)3 crystallizes in space group R with unit cell parameters: a = b = 12.9710 (2), c = 11.7825 (2) Å, V = 1716.78 (6) Å3, Z = 6. The thermal stability and electrical conductivity of the new compounds were investigated. Electrical conductivity measurements gave high values for the triple molybdates M5CrHf(MoO4)6 (M = K, Tl) (σ = 5.22 × 10−4 S / cm for K5CrHf(MoO4)6, σ = 1.1 × 10−2 S / cm for Tl5CrHf(MoO4)6 at 773 K) and relatively low values for the triple molybdate TlCrHf0.5(MoO4)3 (σ = 4.42 × 10−6 S / cm at 773 K).

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Держатели документа:
Baikal Institute of Nature Management, SB RAS, Sakhyanovoy St., 6, Ulan-Ude, 670047, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Academy of Sciences, 50/38 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 82 Svobodniy Av., Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Serysheva str. 47, Khabarovsk, 680021, Russian Federation

Доп.точки доступа:
Grossman, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bazarov, B. G.; Bazarova, J. G.
}
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8.


   
    Comparative study of the magnetic phase diagrams and spin-flop-driven magnetodielectric responses of the pure and Mn3+-doped Pb2Fe2Ge2O9 single crystals / A. Pankrats, M. Kolkov, A. Balaev [et al.] // J. Magn. Magn. Mater. - 2021. - Vol. 534. - Ст. 168023, DOI 10.1016/j.jmmm.2021.168023. - Cited References: 21. - This study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project no. 18-42-240008 “Effect of the Magnetic Structure on the Magnetodielectric Properties of Oxide Crystals Containing Stereoactive Pb 2+ and Bi 3+ Ions” . - ISSN 0304-8853
   Перевод заглавия: Сравнительное исследование магнитных фазовых диаграмм и индуцированных спин-флоп переходом магнитодиэлектрических откликов в чистом и допированном Mn3+ монокристаллах Pb2Fe2Ge2O9
Кл.слова (ненормированные):
Magnetic structure -- Magnetic anisotropy -- Magnetodielectric properties -- Spin reorientation -- Magnetic phase diagram
Аннотация: The Pb2Fe2-xMnxGe2O9 (x = 0.43) orthorhombic antiferromagnet single crystals have been synthesized by a modified pseudo-flux technique and their magnetic and magnetodielectric properties have been investigated. It has been established that partial substitution of highly anisotropic Mn3+ ions for iron ones significantly affects the magnetic structure of the crystal. Under magnetization of the crystal along the rhombic b and c axes, magnetization jumps have been detected, which are indicative of the occurrence of orientational transitions identified as first-order ones. No weak ferromagnetism characteristic of the pure crystal in the rhombic a axis direction has been detected. The field dependences of the magnetization for the pure and Mn-doped crystals have been analyzed using the thermodynamic potential that takes into account the crystal symmetry. It has been shown that, in the Mn-substituted crystal, the antiferromagnetic vector in the ground state is parallel to the rhombic b axis; in this state, weak ferromagnetism has not been observed. Under magnetization along the b axis, a conventional spin-flop transition occurs. The orientational transition under magnetization along the c axis has been attributed to the reorientation of the antiferromagnetic vector relative to the a axis with the simultaneous occurrence of a weak ferromagnetic moment along the c axis. Magnetic phase diagrams of the Mn-doped crystal for the magnetic fields H||b and H||c have been built. In the Mn-doped crystal, at E||c and H||c, the orientational transition-induced magnetodielectric response jump has been detected, which is higher than the jumps observed for the undoped crystal by a factor of 3. The magnetodielectric properties of the pure and Mn-doped crystals have been analyzed using their magnetic phase diagrams.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Kolkov, M. I.; Колков, Максим Игоревич; Balaev, A. D.; Балаев, Александр Дмитриевич; Freydman, A. L.; Фрейдман, Александр Леонидович; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Balaev, D. A.; Балаев, Дмитрий Александрович
}
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9.


   
    Pressure-temperature phase diagram of incommensurate Rb2ZnBr4 / E. V. Shemetov, I. P. Aleksandrova, V. L. Serebrennikov // Twelfth European Crystallographic Meeting : collected abstracts in 3 vols. - Moscow, 1989. - Vol. 1. - P. 526. - Cited References: 3


Доп.точки доступа:
Shemetov, E. V.; Aleksandrova, I. P.; Александрова, Инга Петровна; Serebrennikov, V. L.; European crystallographic meeting(12 ; 1989 ; Aug ; 20-29 ; Moscow); Академия наук СССР; Институт кристаллографии АН СССР; International Union of Crystallography
}
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10.


   
    Thallium ionic conductivity of new thallium indium hafnium molybdate ceramics / V. G. Grossman, J. G. Bazarova, M. S. Molokeev, B. G. Bazarov // Ionics. - 2020. - Vol. 26. - P. 6157-6165, DOI 10.1007/s11581-020-03739-7. - Cited References: 60. - This study was carried out within the state assignment of FASO of Russia (Theme No 0339-2016-0007) as well was supported by RFBR Grants 18-08-00799 and 18-03-00557 . - ISSN 0947-7047. - ISSN 1862-0760
   Перевод заглавия: Таллий-ионная проводимость новой керамики на основе таллия, индия, гафния, молибдата
РУБ Chemistry, Physical + Electrochemistry + Physics, Condensed Matter
Рубрики:
POSITIVE ELECTRODE MATERIAL
   CRYSTAL-STRUCTURE

   TRIPLE MOLYBDATE

Кл.слова (ненормированные):
Synthesis -- Thallium -- Molybdates -- Phase diagram -- DSC -- Conducting material
Аннотация: In the process of studying the system Tl2MoO4–In2(MoO4)3–Hf(MoO4)2, a new thallium indium hafnium molybdate was found. The crystal structure of the molybdate Tl5InHf(MoO4)6 was determined in the centrosymmetric space group R3¯c (a = 10.63893 (5) Å, c = 38.1447(3) Å; V = 3739.04 (4) Å3, Z = 6). The structure is a three-dimensional framework consisting of alternating (Hf,In)O6-octahedra connected by МоО4-tetrahedra. Each octahedron has common vertices with tetrahedra. The atoms arranged in this way form channels extended along with the a and b axes, in which thallium atoms are located. The conductivity behavior of Tl5InHf(MoO4)6 ceramics was studied in the temperature range from 300 to 870 K. The conductivity of the heavy cations of thallium is activated with increasing temperature.

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Держатели документа:
Russian Acad Sci, Baikal Inst Nat Management, Siberian Branch, Sakhyanovoy St 6, Ulan Ude 670047, Buryat Republic, Russia.
Russian Acad Sci, Fed Res Ctr KSC, Kirensky Inst Phys, Siberian Branch, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 82 Svobodniy Av, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Grossman, Victoria G.; Bazarova, J. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bazarov, B. G.; RFBRRussian Foundation for Basic Research (RFBR) [0339-2016-0007]; [18-08-00799]; [18-03-00557]
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