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Caloric characteristics of PbTiO3 in the temperature range of the ferroelectric phase transition / E. A. Mikhaleva [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 9. - P. 1832-1840, DOI 10.1134/S1063783412090181. - Cited References: 31. - This study was supported by the Russian Foundation for Basic Research (project no. 12-08-00079) and 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). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
   LEAD TITANATE
   DIELECTRIC PROPERTIES
   SOLID-SOLUTIONS
   PRESSURE
   PEROVSKITES
   DEPENDENCE
   BEHAVIOR
   HEAT
Аннотация: The heat capacity and thermal expansion of the PbTiO3 ceramic sample have been measured in the temperature range 80–970 K. The electrocaloric and barocaloric efficiencies of lead titanate in the ferroelectric phase transition range have been investigated by analyzing the experimental data in terms of the thermodynamic theory of phase transitions, the electrical equation of state P(T, E), the Pippard equation, and the S(T, p) diagram.

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Публикация на русском языке Калорические характеристики PbTiO3 в области сегнетоэлектрического фазового перехода [Текст] / Е. А. Михалева [и др.] // Физ. тверд. тела. - 2012. - Т. 54 Вып. 9. - С. 1719-1726

Держатели документа:
[Mikhaleva, E. A.
Flerov, I. N.
Gorev, M. V.] Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia
[Mikhaleva, E. A.
Flerov, I. N.
Gorev, M. V.
Molokeev, M. S.
Cherepakhin, A. V.
Kartashev, A. V.
Mikhashenok, N. V.
Sablina, K. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Kartashev, A. V.; Карташев, Андрей Васильевич; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Sablina, K. A.; Саблина, Клара Александровна
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Caloric effects and phase transitions in ferroelectric-ferromagnetic composites (x) La0.7Pb0.3MnO3 – (1-x) PbTiO3 / E. Mikhaleva [et al.] // International Conference “Functional materials and nanotechnologies” FM&NT 2012. - 2012. - P. 82

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Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Kartashev, A. V.; Карташев, Андрей Васильевич; Gorev, M. V.; Горев, Михаил Васильевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Sablina, K. A.; Саблина, Клара Александровна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Flerov, I. N.; Флёров, Игорь Николаевич; Functional Materials and Nanotechnologies(2012 ; Apr. ; 17-20 ; Riga, Latvia)
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Caloric effects and phase transitions in ferromagnetic-ferroelectric composites xLa(0.7)Pb(0.3)MnO(3)-(1-x)PbTiO3 / E. A. Mikhaleva [et al.] // J. Mater. Res. - 2013. - Vol. 28, Is. 24. - P. 3322-3331, DOI 10.1557/jmr.2013.360. - Cited References: 24. - This study was supported in parts by The Russian Foundation for Basic Research (Grant No. 12-02-31253-mol-a), Federal Special Program "Scientific and scientific-pedagogical staff of innovative Russia" (N 8379), and Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (Grant NO. NSh-4828.2012.2). Dr. Maxim S. Molokeev is acknowledged for the x-ray characterization of the samples. . - ISSN 0884-2914. - ISSN 2044-5326

РУБ Materials Science
Рубрики:
PRESSURE
TEMPERATURE
Аннотация: Ceramic volumetric composites xLa(0.7)Pb(0.3)MnO(3)-(1-x)PbTiO3 (x = 0.18 and 0.85) were prepared. X-ray investigations have shown that rather low sintering temperature (800 degrees C) has allowed us to avoid the reaction and interdiffusion between two initial phases. Heat capacity, thermal expansion, and intensive magnetocaloric effect were measured in a wide temperature range. The sample composition has a low influence on temperatures of the ferromagnetic and ferroelectric phase transitions in composites. Electro- and barocaloric effects were determined by analysis in the framework of thermodynamic theory, electric equation of state, Maxwell relationships, and entropy-temperature-pressure phase diagram. Multicaloric efficiency of composites is discussed and compared with that of initial La0.7Pb0.3MnO3 and PbTiO3 compounds. Variation of a relationship between components can significantly increase both barocaloric and magnetocaloric efficiency of compositional material due to the mechanical stress appearing between grains of different ferroic phases under magnetic field.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660079, Russia

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Flerov, I. N.; Флёров, Игорь Николаевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Gorev, M. V.; Горев, Михаил Васильевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Sablina, K. A.; Саблина, Клара Александровна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Volkov, N. V.; Волков, Никита Валентинович; Shabanov, A. V.; Шабанов, Александр Васильевич; Russian Foundation for Basic Research [12-02-31253-mol-a]; Federal Special Program "Scientific and scientific-pedagogical staff of innovative Russia" [N 8379]; Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools [NSh-4828.2012.2]
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Capacitance dilatometer for small deformations measurements caused by external magnetic and electric fields and temperature / A. L. Freydman [et al.] // Moscow International Symposium on Magnetism (MISM-2017) : 1-7 July 2017 : book of abstracts. - 2017. - Ст. 5PO-I2-2. - P. 1047

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Доп.точки доступа:
Freydman, A. L.; Фрейдман, Александр Леонидович; Popkov, S. I.; Попков, Сергей Иванович; Krasikov, A. A.; Красиков, Александр Александрович; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Moscow International Symposium on Magnetism(7 ; 2017 ; Jul. ; Moscow); Московский государственный университет им. М.В. Ломоносова; Российский фонд фундаментальных исследований
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Comparison of magnetic properties of GdFe3(BO3)4, ferroborates grown using various solvents / I. A. Gudim, E. V. Eremin, N. V. Mikhashenok, V. R. Titova // Phys. Solid State. - 2023. - Vol. 65, Is. 2. - P. 235-239, DOI 10.21883/PSS.2023.02.55406.505. - Cited References: 18. - This study was supported by grant No. 22-12-20019 provided by the Russian Science Foundation and the Krasnoyarsk Regional Science Foundation (https://rscf.ru/project/22-72-00017/) . - ISSN 1063-7834. - ISSN 1090-6460
Кл.слова (ненормированные):
crystal growth -- antiferromagnets -- multferroics
Аннотация: GdFe3(BO3)4, single crystals were grown from melt-solutions based on bismuth trimolybdate and lithium tungstate. Single crystals of gadolinium ferroborate from lithium-tungstate solution-melt were grown for the first time. The magnetic properties of the grown crystals are compared. It is shown that the GdFe3(BO3)4, ferroborate obtained using bismuth solution-melt trimolybdate contains impurities of Bi3+ ions (6% at.), which replace Gd3+ ions. Whereas GdFe3(BO3)4, ferroborate grown from a solution-melt based on lithium tungstate does not seem to contain such uncontrolled impurities.

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Публикация на русском языке Сравнение магнитных свойств ферроборатов GdFe3(BO3)4, выращенных с использованием различных растворителей [Текст] / И. А. Гудим, Е. В. Еремин, Н. В. Михашенок, В. Р. Титова // Физ. тверд. тела. - 2023. - Т. 65 Вып. 2. - С. 243-247

Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia

Доп.точки доступа:
Gudim, I. A.; Гудим, Ирина Анатольевна; Eremin, E. V.; Еремин, Евгений Владимирович; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Titova, V. R.; Титова, Вероника Романовна
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Effect of Isovalent Cation Substitution on the Thermal, Caloric, and Magnetocaloric Properties of the (La1 – yEuy)0.7Pb0.3MnO3 Manganites / A. V. Kartashev [et al.] // Phys. Solid State. - 2019. - Vol. 61, Is. 1. - P. 62-68, DOI 10.1134/S1063783419010116. - Cited References: 27. - This study was supported by the Russian Foundation for Basic Research, the Government of the Kras-noyarsk Territory, and the Krasnoyarsk Territorial Foundation for Support of the Scientific and R&D Activity, project no. 17-42-240076 “Complex Approach to Searching and Development of Promising Solid-State Ferroic Cooling Agents Based on the Single-and Multicaloric Effects.” The authors thank M.S. Molokeev for structural characterization of the composites. . - ISSN 1063-7834
Аннотация: Crystalline samples of the (La1 – yEuy)0.7Pb0.3MnO3 (y = 0, 0.2, 0.4, 0.5, 0.6, and 0.8) manganite solid solutions have been grown. Temperature dependences of the specific heat, thermal expansion, and high-intensity magnetocaloric effect have been investigated. A comparative analysis of the effect of isovalent cationic substitution on the thermal and caloric parameters of the ferromagnetic phase transition has been made. It has been shown that the growth of the Eu atom concentration leads to a decrease in the phase transition entropy and an increase in the baric coefficient dT/dp. Field and temperature dependences of the magnetocaloric effect have been established. It is demonstrated that, varying the ratio of cations, one can obtain the solid solutions with the maximum magnetocaloric effect value in fields of up to 6 kOe in a temperature range of 90–340 K. Owing to the similar reduced relative cooling powers, the investigated solid solutions can be used as reference solid-state cooling media in designing the cascade cooling systems.

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Публикация на русском языке Влияние изовалентного замещения катионов на термические, калорические и магнетокалорические свойства манганитов (La1-yEuy)0.7Pb0.3MnO3 [Текст] / А. В. Карташев [и др.] // Физ. тверд. тела. - 2019. - Т. 61 Вып. 1. - С. 200-206

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State Pedagogical University, Krasnoyarsk, 660049, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Kartashev, A. V.; Карташев, Андрей Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Mikhashenok, N. V.; Михашенок, Наталья Владимировна
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Effect of synthesis conditions on the magnetic properties of chromium borate single crystals / N. V. Mikhashenok, A. I. Pankrats, I. A. Gudim [et al.] // V International Baltic Conference on Magnetism. IBCM : Book of abstracts. - 2023. - P. 127. - Cited References: 5. - РФН № 22-12-20019 ; Красноярский регион. фонд науки

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

Доп.точки доступа:
Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Pankrats, A. I.; Панкрац, Анатолий Иванович; Gudim, I. A.; Гудим, Ирина Анатольевна; Skorobogatov, S. A.; Molokeev, M. S.; Молокеев, Максим Сергеевич; International Baltic Conference on Magnetism(5 ; 2023 ; Aug. 20-24 ; Svetlogorsk, Russia); Балтийский федеральный университет им. И. Канта
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Features of the melt–solution synthesis of the TbCr3(BO3)4 single crystals / I. A. Gudim, N. V. Mikhashenok, A. D. Vasiliev [et al.] // J. Cryst. Growth. - 2024. - Vol. 637-638. - Ст. 127716, DOI 10.1016/j.jcrysgro.2024.127716. - Cited References: 22. - The authors thank A.V. Zamkov for assistance in preparing the samples for the conoscopic study. The characterization and examination of the samples were performed at the Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences. - This study was supported in part by the Russian Science Foundation and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activity, project no. 22-12-20019 . - ISSN 0022-0248. - ISSN 1873-5002
Кл.слова (ненормированные):
Growth from melt-solution -- Single crystal growth -- Cromium borates -- Rare-earth compounds -- Oxides -- Magnetic materials
Аннотация: The phase formation of terbium chromoborate TbCr3(BO3)4 in the bismuth trimolybdate and lithium tungstate melt–solutions has been studied. The absence of the terbium chromoborate trigonal phase in the bismuth trimolybdate-based system at all component ratios has been shown. The component ratio in the lithium tungstate-based system has been found at which the TbCr3(BO3)4 trigonal crystals are formed at temperatures above 1100 °C; below this temperature, the monoclinic phase dominates. The structural and magnetic properties of the grown crystals have been studied. It has been established that the trigonal and monoclinic TbCr3(BO3)4 crystals synthesized from the lithium tungstate-based solvent exhibit identical magnetic properties. At the same time, a significant difference of the magnetic properties of the single crystals synthesized from the bismuth molybdate melt–solution has been observed. This difference has been attributed to the effect of Bi3+ ions that partially replace Tb3+ ions.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036 Russia

Доп.точки доступа:
Gudim, I. A.; Гудим, Ирина Анатольевна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Melnikova, S. V.; Мельникова, Светлана Владимировна; Pavlovskii, M. S.; Павловский, Максим Сергеевич; Skorobogatov, S. A.; Скоробогатов, Станислав Алексеевич; Pankrats, A. I.; Панкрац, Анатолий Иванович
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    Flux growth and phase transitions in Ni3−xMnxBO5:Cu compound / E. Moshkina, N. Mikhashenok, A. Shabanov [et al.] // J. Alloys Compd. - 2025. - Vol. 1010. - Ст. 178297, DOI 10.1016/j.jallcom.2024.178297. - Cited References: 33. - This research was supported by the Russian Science Foundation (project no. 23–72–00047). The work was carried out using the equipment of a unique scientific installation "Neutron Research Complex based on the IR-8 Reactor". XPS measurements were performed with the support from Kazan Federal University’s PRIORITET-2030 Program of Strategic Academic Leadership. The work of E.E.V. was carried out within the state assignment of Kirensky Institute of Physics . - ISSN 0925-8388. - ISSN 1873-4669
   Перевод заглавия: Раствор-расплавный рост и фазовые переходы в соединении Ni3–xMnxBO5:Cu
Кл.слова (ненормированные):
Ludwigite -- Flux growth -- ESR -- Ferrimagnetic -- Spin-glass -- Neutron scattering
Аннотация: For the first time, single crystals of Ni3−xMnxBO5:Cu, measuring up to 0.4×0.4×4 mm3, have been grown using the flux technique. The flux used was based on Bi2Mo3O12-B2O3; the addition of CuO served as a solvent component and promoted the growth of Ni3−xMnxBO5:Cu. Energy-dispersive X-ray spectroscopy (EDX) showed that the concentration of copper in the crystal, relative to the flux content was low-approximately 1:8. Subsequently, neutron diffraction, alternating current (AC) magnetization, and electron spin resonance (ESR) were performed on the Ni3−xMnxBO5:Cu compound, which is classified as ludwigite-type compound. Neutron diffraction results confirmed that the Ni3− xMnxBO5:Cu structure belongs to the Pbam space group. Furthermore, AC magnetization and ESR measurements identified three ferrimagnetic phase transitions occurring at 90 K, 95 K, and 150 K, as well as a canonical spin-glass transition near 50 K.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk 660036, Russia
Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences", Krasnoyarsk 660036, Russia
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk 660037, Russia
Zavoisky Physical-Technical Institute, Federal Research Center "Kazan Scientific Center of RAS", Kazan 420029, Russia
Institute of Physics, Kazan Federal University, Kazan 420008, Russia

Доп.точки доступа:
Moshkina, E. M.; Мошкина, Евгения Михайловна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Shabanov, A. V.; Шабанов, Александр Васильевич; Eremin, E. V.; Еремин, Евгений Владимирович; Yatsyk, I.; Yanilkin, I.; Shustov, V.; Popov, D.; Eremina, R.
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10.

Heat capacity, structural and magnetic properties of mixed-valence Pb3(Mn,Cu)7O15 / N. V. Mikhashenok [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. 1. - Ст. G.03. - P. 555. - Cited References: 2 . - ISBN 978-5-9500855-7-4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Institute of Chemistry and Chemical Technology, 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; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Soloviev, L. A.; Соловьев, Леонид Александрович; Nazarenko, I. I.; Назаренко, Илья Иванович; Eremin, E. V.; Еремин, Евгений Владимирович; Sofronova, S. N.; Софронова, Светлана Николаевна; 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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11.

Magnetic phase diagram of the olivine-type Mn2GeO4 single crystal estimated from magnetic, resonance and thermodynamic properties / N. V. Volkov [et al.] // J. Phys.: Condens. Matter. - 2013. - Vol. 25, No. 13. - Ст. 136003. - P. DOI 10.1088/0953-8984/25/13/136003
Аннотация: Mn2GeO4 single crystals with the olivine structure grown by the modified flux method have been investigated. Pronounced magnetic phase transitions at T1 = 47.7 K, T2 = 17 K and T3 = 5.5 K, with T2 being dependent on an applied magnetic field, have been found. Based on the data of magnetic, resonance and temperature measurements, the entire phase diagram of Mn2GeO4 has been built. Mn2GeO4 is shown to be a material with a complex magnetic structure consisting of two magnetic subsystems.

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Держатели документа:
Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Dept Phys, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Sablina, K. A.; Саблина, Клара Александровна; Bayukov, O. A.; Баюков, Олег Артемьевич; Gorev, M. V.; Горев, Михаил Васильевич; Balaev, A. D.; Балаев, Александр Дмитриевич; Pankrats, A. I.; Панкрац, Анатолий Иванович; Tugarinov, V. I.; Тугаринов, Василий Иванович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Popkov, S. I.; Попков, Сергей Иванович
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12.

Mikhashenok, N. V.
Magnetic properties and crystal structure Mn1-xNixGeO3 single crystal / N. V. Mikhashenok, E. V. Eremin, M. S. Molokeev // 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.P30. - P. 369. - Cited References: 2 . - ISBN 978-5-9500855-7-4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science

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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; Eremin, E. V.; Еремин, Евгений Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Михашенок, Наталья Владимировна; 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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13.

Magnetic properties of TbCr3(BO3)4 groun from melt-solutions based on Bi2Mo3O12 and based on Li2WO4 / I. A. Gudim, E. V. Eremin, V. R. Titova, N. V. Mikhashenok // Book of abstacts of Samarkand International Symposium on Magnetism (SISM-2023) / int. adv. com. S. G. Ovchinnikov [et al.]. - 2023. - Ст. 3PO-L8-8. - P. 200. - Cited References: 1 . - ISBN 978-5-00202-320-2

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Держатели документа:
L.V. Kirensky Institute of Physics SB RAS

Доп.точки доступа:
Ovchinnikov, S. G. \int. adv. com.\; Овчинников, Сергей Геннадьевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Eremin, E. V.; Еремин, Евгений Владимирович; Titova, V. R.; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Samarkand International Symposium on Magnetism(2023 ; July 2-6 ; Samarkand); Samarkand State University
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14.

Magnetic properties of the TbCr3(BO3)4 single crystals synthesized under different conditions: Successive ordering of the Cr3+ and Tb3+ magnetic subsystems / A. I. Pankrats, S. A. Skorobogatov, I. A. Gudim [et al.] // J. Alloys Compd. - 2025. - Vol. 1010. - Ст. 178230, DOI 10.1016/j.jallcom.2024.178230. - Cited References: 31 . - ISSN 0925-8388. - ISSN 1873-4669
Кл.слова (ненормированные):
Magnetic susceptibility -- Magnetic anisotropy -- Exchange interaction -- Spin reorientation -- Antiferromagnetic order -- Inclined magnetic structure
Аннотация: The magnetic properties of rare-earth borates evoke keen interest, since the coexistence of two interconnected magnetic subsystems, 3d and 4 f ions, in the crystals of this family causes a diversity of magnetic structures and phase transitions between them. A comparative study of the effect of synthesis conditions on the structure and magnetic properties of the terbium chromoborate TbCr3(BO3)4 single crystals grown from bismuth molybdate and lithium tungstate solvents has been carried out. In the single crystals with the monoclinic symmetry synthesized from the bismuth molybdate solvent, partial substitution of Bi3+ions for Tb3+ ions occurs, which entails a change in the magnetic anisotropy of the crystal and the formation of an angular magnetic structure, in which, unlike the crystals grown from another solvent, the Ising axis of Tb3+ ions deviates from the С3 pseudo-axis direction by an angle of ∼40°. In the case of the lithium tungstate solvent, single crystals with the trigonal and monoclinic symmetry are formed and their temperature and field dependences of the magnetization coincide. At a Néel temperature of TN1 = 9.2 K, the antiferromagnetic ordering with the magnetic moments lying in the basal plane is established in the Cr3+ ion subsystem. Due to the weakness of the exchange interaction between Cr3+ and Tb3+ ions, the antiferromagnetic order in the terbium subsystem of all the investigated TbCr3(BO3)4 crystals is formed at a lower temperature: TN2 = 5.5 K. The existence of two temperatures of the successive ordering of the magnetic subsystems of 3d and rare-earth ions has been found for the first time in the crystals of the huntite family and confirmed by the results of the magnetization and specific heat investigations. The lower ordering temperature of the terbium subsystem, which has a strong easy-axis magnetic anisotropy, also explains the nature of the easy plane→easy axis orientational transition in the chromium subsystem discovered previously at a temperature of ∼5 K.

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

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Skorobogatov, S. A.; Скоробогатов, Станислав Алексеевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Zharkov, S. M.; Жарков, Сергей Михайлович; Zeer, G. M.; Зеер, Галина Михайловна
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15.

Magnetization and magnetocaloric effect in La0.7Pb0.3MnO3 ceramics and 0.85(La0.7Pb0.3MnO3)–0.15(PbTiO3) composite / E. Mikhaleva [et al.] // J. Mater. Res. - 2015. - Vol. 30, Is. 2. - P. 278-285, DOI 10.1557/jmr.2014.369. - Cited References:29. - This work was supported by Council on Grants from the President of theRussian Federation for Support of Leading Scientific Schools (Grant No.NSh-924.2014.2). . - ISSN 0884. - ISSN 2044-5326. -

РУБ Materials Science, Multidisciplinary
Рубрики:
PHASE-TRANSITIONS
ELECTROCALORIC MATERIALS
Аннотация: The magnetization behavior under temperature and magnetic field variation was investigated for La0.7Pb0.3MnO3 ceramics and ferromagnetic-ferroelectric 0.85(La0.7Pb0.3MnO3)-0.15(PbTiO3) composite. The second-order ferromagnetic phase transition in manganite is shifted to the tricritical point in composite material. Comparison of the intensive caloric effect and the difference between relative cooling powers (RCP) in both materials proves a significant role of intrinsic pressure in elevating caloric efficiency in composite induced by elastic coupling between the grains of LPM and PT components. No temperature change in composite under an electric field of 2 kV/cm associated with electrocaloric effect or indirect magnetoelectric coupling was observed. The effect of magnetic field on some peculiar temperatures is considered. A contribution from pressure generated by magnetic field to baric coefficient dT/dp of ferromagnetic transformation temperature in composite was suggested. The results obtained were analyzed in the framework of the magnetic equation of state and compared with the experimentally measured heat capacity.

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Держатели документа:
SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660079, Russia.

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Eremin, E. V.; Еремин, Евгений Владимирович; Flerov, I. N.; Флёров, Игорь Николаевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Sablina, K. A.; Саблина, Клара Александровна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Council on Grants from the President of the Russian Federation forSupport of Leading Scientific Schools [NSh-924.2014.2]
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16.

    Multicaloric efficiency of ferroelectric-ferromagnetic volume composites(x)La0.7Pb0.3MnO3 - (1-x)PbTiO3 [Текст] / E. A. Mikhaleva [и др.] // Joint 12th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity. 9th International Conference Functional Materials and Nanotechnologies / International Conference Functional Materials and Nanotechnologies (9 ; 2014 ; Sept. 29 – Oct. 2 ; Riga). - 2014. - Ст. R-11. - P. 172
   Перевод заглавия: Мультикалорические эффекты в объемных композитах сегнетоэлектрик-ферромагнетик (x)La0.7Pb0.3MnO3 - (1-x)PbTiO3

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Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Gorev, M. V.; Горев, Михаил Васильевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Sablina, K. A.; Саблина, Клара Александровна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Joint Russia/CIS/Baltic/Japan Symposium on Ferroelectricity(12 ; 2014 ; Sept. 29 - Oct. 2 ; Riga); International Conference Functional Materials and Nanotechnologies(9 ; 2014 ; Sept. 29 - Oct. 2 ; Riga)
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17.

    Raman spectra and phase composition of MnGeO3 crystals / A. S. Oreshonkov [et al.] // J. Raman Spectrosc. - 2016. - Vol. 47, Is. 5. - P. 531-536, DOI 10.1002/jrs.4816. - Cited References:21. - The work was partially supported by the RFBR through grants no. 13-02-00825.; O.A.S. and K.A.S. are partially supported by the Ministry of Science and Education of the Russian Federation. . - ISSN 0377-0486. - ISSN 1097-4555
   Перевод заглавия: Раман спектры и фазовый состав кристаллов MnGeO3

РУБ Spectroscopy
Рубрики:
TENSOR ANALYSIS
   SINGLE-CRYSTAL
   POLYCRYSTALLINE
   SPECTROSCOPY
   PYROXENE
Кл.слова (ненормированные):
Raman spectroscopy -- lattice dynamics -- Raman tensor analysis -- orthopyroxene -- clinopyroxene
Аннотация: MnGeO3 single-crystal samples have been synthesized by optical zonal melting and spontaneous crystallization. X-ray crystal analysis showed the first sample to be a two-phase one with phase ratio as follows: 17% - monoclinic C2/c, and 83% - orthorhombic Pbca; the phase ratio of the second sample was unknown. Raman spectra have been produced for these samples. Lattice dynamics has been simulated and polarization dependencies of lines' intensities have been analyzed to interpret experimental Raman spectra and to attribute lines to the spectra of monoclinic and orthorhombic phases. Copyright (C) 2015 John Wiley & Sons, Ltd.

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Держатели документа:
RAS, Kirensky Inst Phys, SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.

Доп.точки доступа:
Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Gerasimova, J. V.; Герасимова, Юлия Валентиновна; Ershov, A. A.; Ершов, Александр Андреевич; Krylov, A. S.; Крылов, Александр Сергеевич; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Vtyurin, A. N.; Втюрин, Александр Николаевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Terent'ev, K. Yu.; Терентьев, Константин Юрьевич; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; RFBR [13-02-00825]; Ministry of Science and Education of the Russian Federation
}
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18.

Role of magnetic subsystems to form a complex magnetic structure Mn2GeO4 single crystals / N. V. Volkov [et al.] // Moscow Int. Symp. on Magnet. (MISM-2014) : 29 June - 3 July 2014 : вook of abstracts. - 2014. - Ст. 1PO-J1-10. - P. 517 . - ISBN 978-5-91978-025-0

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Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Sablina, K. A.; Саблина, Клара Александровна; Pankrats, A. I.; Панкрац, Анатолий Иванович; Balaev, A. D.; Балаев, Александр Дмитриевич; Gorev, M. V.; Горев, Михаил Васильевич; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
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19.

    Role of magnetic subsystems to form a complex magnetic structure Mn2GeO4 single crystals / N. V. Volkov [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2015. - Vol. 233-234: Achievements in Magnetism. - P. 129-132, DOI 10.4028/www.scientific.net/SSP.233-234.129 . - ISSN 1662-9779. - ISSN 978-3-038
   Перевод заглавия: Роль магнитных подсистем в формировании комплексной магнитной структуры монокристаллов Mn2GeO4
Рубрики:
Achievements in magnetism
   Magnetic semiconductors and oxides
Кл.слова (ненормированные):
antiferromagnetic resonance -- magnetic subsystems
Аннотация: Present paper reports of resonance properties of Mn2GeO4 single crystals. The data confirm the formation of a complex spiral magnetic structure at low temperatures. It is shown that the spin reorientation may be associated with the competition anisotropic contributions of the various subsystems of the manganese ions.

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Доп.точки доступа:
Perov, N. \ed.\; Semisalova, A. \ed.\; Volkov, N. V.; Волков, Никита Валентинович; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Sablina, K. A.; Саблина, Клара Александровна; Pankrats, A. I.; Панкрац, Анатолий Иванович; Tugarinov, V. I.; Тугаринов, Василий Иванович; Balaev, A. D.; Балаев, Александр Дмитриевич; Gorev, M. V.; Горев, Михаил Васильевич; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
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20.

    Study of flux growth of Cr-containing borates and oxyborates under the conditions of low Cr2O3 solubility / E. Moshkina, N. Mikhashenok, D. Kokh [et al.] // CrystEngComm. - 2025. - Vol. 27, Is. 2. - P. 226-237, DOI 10.1039/D4CE00943F. - Cited References: 28 . - ISSN 1466-8033
   Перевод заглавия: Изучение раствор-расплавного роста Cr-содержащих боратов и оксиборатов в условиях низкой растворимости Cr2O3
Аннотация: With the type, size and quality of experimental samples playing a special role in searching for new materials, single crystal samples are of high value and methods of their fabrication have to be developed and constantly improved, to be adjusted to the peculiarities of an expected compound. The flux technique for producing chromium-containing materials is characterized by the low solubility of Cr2O3 used. The study deals with crystallization of Cr-containing borates HoCr3(BO3)4 with a huntite structure and oxyborates Cu2CrBO5 with a ludwigite structure in flux systems based on Li2WO4. Consideration is given not only to the possibility of growing sizable single crystals of these compounds, but also to a mixed huntite–ludwigite flux system intended to unify the growth technology and to identify the phase boundary of these compounds. The investigation of the phase diagram allowed the secondary phases to be found and analyzed. Powder and single crystal X-ray diffraction and element-sensitive EDX techniques were used to control the composition and structure of the obtained compounds. Orientational thermal and field dependences of magnetization of the obtained crystals HoCr3(BO3)4 and Cu2CrBO5 were measured.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences", 660036 Krasnoyarsk, Russia
Siberian Federal University, 660041 Krasnoyarsk, Russia
Laboratory of Theory and Optimization of Chemical and Technological Processes, University of Tyumen, 625003 Tyumen, Russia

Доп.точки доступа:
Moshkina, E. M.; Мошкина, Евгения Михайловна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Kokh, D.; Pavlovskiy, M. S.; Павловский, Максим Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Eremin, E. V.; Еремин, Евгений Владимирович; Zolotov, A.; Золотов, Андрей Олегович; Molokeev, M. S.; Молокеев, Максим Сергеевич
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