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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Andryushin N. D., Pavlovskiy M. S., Zinenko V. I.
Заглавие : Lattice dynamics in improper ferroelectric YGaO3
Место публикации : Ferroelectrics. - 2020. - Vol. 567, Is. 1: Special Issue in Honor of Professor Stanislav A. Grindev on the Occasion of His 83rd Birthday. - P.28-36. - ISSN 00150193 (ISSN), DOI 10.1080/00150193.2020.1791584
Примечания : Cited References: 19. - This study was supported by the Russian Foundation for Basic Research and Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund by project No. 18-02-00130
Аннотация: The structural phase transition P63/mmc → P63cm in hexagonal YGaO3 crystal is studied by first-principles methods. From lattice dynamics calculations it was obtained that the mechanism of transition into polar phase is similar to the one in isostructural YMnO3 crystal. As a result of calculations the improper ferroelectricity and electrical polarization were revealed in YGaO3.
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2.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zinenko V. I., Zamkova N. G., Zhandun V. S., Pavlovskiy M. S.
Заглавие : The lattice dynamics, ferroelectric and antiferrodistorsive transitions in BiFeO3 and BiMnO3 crystals
Коллективы : Russia/CIS/Baltic/Japan Symposium on Ferroelectricity
Место публикации : Abstracts of the 10th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity. - 2010. - P.168
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Eremin E. V., Pavlovskiy M. S., Gudim I. A., Temerov V. L., Molokeev M. S., Andryushin N. D., Bogdanov E. V.
Заглавие : Synthesis of NdSc3(BO3)4 single crystals and study of its structure properties
Место публикации : J. Alloys Compd. - 2020. - Vol. 828. - Ст.154355. - ISSN 09258388 (ISSN), DOI 10.1016/j.jallcom.2020.154355
Примечания : Cited References: 35. - This study was supported by the Russian Foundation for Basic Research and Government of Krasnoyarsk Territory , Krasnoyarsk Region Science and Technology Support Fund by project № 18-42-240011 р_а
Аннотация: Using the group method, single crystals of NdSc3(BO3)4 are grown from a melt solution and X-ray structural studies are performed. It is shown that at room temperature the NdSc3(BO3)4 crystal has a huntite-type structure with space group P3121. The temperature dependence of the heat capacity shows anomalous behaviour at Т = 504 ± 1 K. This anomaly corresponds to a structural phase transition from R32 to P3121. It is known that a similar transition occurs in RFe3(BO3)4 crystals; an anomaly in the specific heat is also observed. Theoretical calculations are carried out from the first principles of the lattice dynamics of the crystal under study in a high-symmetry phase with the R32 space group. An unstable (soft) mode in the boundary point of Brillouin zone was found. It was determined that this structural instability is responsible for the structural displacement-type phase transition R32 → P3121.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moshkina E. M., Krylova S. N., Gudim I. A., Molokeev M. S., Temerov V. L., Pavlovskiy M. S., Vtyurin A. N., Krylov A. S.
Заглавие : Gallium composition-dependent structural phase transitions in HoFe3-xGax(BO3)4 solid solutions: crystal growth, structure, and Raman spectroscopy study
Место публикации : Cryst. Growth Des. - 2020. - Vol. 20, Is. 2. - P.1058-1069. - ISSN 15287483 (ISSN), DOI 10.1021/acs.cgd.9b01387
Примечания : Cited References: 30. - The reported study was funded by the Russian Foundation for Basic Research No. 18-02-00754. The experiments were performed using equipment of Center for Common Use, Krasnoyarsk Scientific Center, FSC SB RAS
Аннотация: Single crystals of solid solutions of HoFe3–xGax(BO3)4 with x = 0, 0.5, 1, 1.5, and 3 were obtained using flux synthesis. The conditions of the synthesis are described in detail. The structural properties of each of the synthesized samples were studied using X-ray powder diffraction analysis at several temperature points (303, 403, and 503 K). The structural parameters of the obtained samples and the “pure” compounds HoFe3(BO3)4 and HoGa3(BO3)4 were compared. The Raman spectra of the obtained solid solutions HoFe3–xGax(BO3)4 were studied in a wide temperature range (T = 10–400 K). The vibrational spectra and eigenvectors of the HoFe3Ga(BO3)4 and HoGa3(BO3)4 in R32 phase and HoFe3Ga(BO3)4 in P3121 phase were calculated within density functional theory. The features of the Raman spectra of HoFe2Ga(BO3)4, HoFe2.5Ga0.5(BO3)4, HoFe3(BO3)4 crystals associated with the R32 → P3121 structural phase transition, which have a strong dependence on the degree of substitution x, were investigated. Peculiarities of the Raman spectra, which are associated with magnetic ordering in HoFe1.5Ga1.5(BO3)4, HoFe2Ga(BO3)4, and HoFe2.5Ga0.5(BO3)4 crystals, were detected.
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5.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zinenko V. I., Zamkova N. G., Zhandun V. S., Pavlovskiy M. S.
Заглавие : The lattice dynamics, ferroelectric and antiferrodistorsive transitions in BiFeO3 and BiMnO3 crystals
Коллективы : Воронежский государственный технический университет, Российская академия наук, International Seminar on ferroelastic physics (6; 2009 ; Sept. 22-25; Voronezh), Международный семинар по физике сегнетоэластиков (6(11); 2009 ; 22-25 сент.; Воронеж)
Место публикации : The 6th International Seminar on Ferroelastic Physics: abstract book. - Voronezh, 2009. - P.111
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6.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Александров, Кирилл Сергеевич, Voronov V. N., Vtyurin A. N., Krylov A. S., Molokeev M. S., Pavlovskiy M. S., Goryainov S. V., Lihacheva A. N., Ancharov A. I.
Заглавие : Pressure-indused phase transition in cubic ScF3 crystal
Коллективы : Russia/CIS/Baltic/Japan Symposium on Ferroelectricity
Место публикации : 9th Russai/CIS/Baltic/Japan symposium on ferroelectricity: abstracts book : June 15-19, 2008, Vilnius, Lithuania. - p.116
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Moshkina E. M., Eremin E. V., Veligzhanin, Alexey, Pavlovskiy M. S., Sofronova S. N., Titova, Veronika, Bezmaternykh L. N.
Заглавие : Concentration transition in Cu2(Mn,Ga)BO5 solid solutions
Колич.характеристики :13 с
Место публикации : J. Magn. Magn. Mater. - 2023. - Vol. 584. - Ст.171072. - ISSN 03048853 (ISSN), DOI 10.1016/j.jmmm.2023.171072. - ISSN 18734766 (eISSN)
Примечания : Cited References: 27
Аннотация: The effects related to the conversion of magnetic structures of a Cu2MnBO5 ferrimagnet to a Cu2GaBO5 antiferromagnet under the Mn3+ → Ga3+ substitution were studied. The properties of four single crystal samples with the gallium concentration x  = 0.04, 0.11, 0.17, 0.25 were examined. The chemical composition and valence state of the samples were determined by X-ray absorption spectroscopy element-sensitive technique. Distribution of the 3d metal ions over crystallographic positions was studied using the first principle calculations by Wien2k program. The evolution of the magnetic properties was investigated by the measurements of the temperature and field dependences of magnetization, dc and ac magnetic susceptibility. In agreement with the previous study of the structure evolution of Cu2Mn1-xGaxBO5 solid solutions, the critical concentration upon a change in the magnetic ordering type was found in the range x  = 0.17–0.25. The non-monotonic behavior of magnetization in terms of the gallium content was found in the concentration range of 0.04–0.17. A complex pattern of magnetic phase transitions belonging to the concentration phase boundary was obtained in the compounds with gallium being within the range x  = 0.17–0.25. One could observe the splitting of the peaks of the real part of ac-susceptibility of the high-temperature phase transition in the Cu2MnBO5-like phase (x = 0.04, 0.11) and that of the low-temperature one at the concentration boundary (x = 0.17, 0.25) with different frequency and orientational dependence. The type and origin of the multiple phase transitions observed in the studied samples were analyzed.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Krylov A. S., Pavlovskiy M. S., Kitaev Y., Gudim I. A., Andryshin N. D., Vtyurin A. N., Jiang, Qinghui, Krylova S. N.
Заглавие : Phase transitions and p–T phase diagram of the multiferroic TbFe3(BO3)4 crystal
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science [20-42-240009]; Russian Foundation for Basic Research and DFG (Deutsche Forschungsgemeinschaft)German Research Foundation (DFG) [448809307, 21-52-12018]
Место публикации : J. Raman Spectrosc. - 2022. - Vol. 53, Is. 6. - P.1179-1187. - ISSN 0377-0486, DOI 10.1002/jrs.6341. - ISSN 1097-4555(eISSN)
Примечания : Cited References: 48. - Russian Foundation for Basic Research; RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, Grant/Award Number: 20-42-240009; Russian Foundation for Basic Research and DFG (Deutsche Forschungsgemeinschaft), Grant/Award Numbers: 448809307, 21-52-12018
Предметные рубрики: BILBAO CRYSTALLOGRAPHIC SERVER
RAMAN-SPECTRA
HIGH-TEMPERATURE
Аннотация: The structural phase transitions in multiferroic TbFe3(BO3)4 with change hydrostatic pressures and temperatures have been studied by Raman spectroscopy and calculation within density functional theory. Lattice dynamics calculations in the TbFe3(BO3)4 crystal in the 32 phase under various values of applied hydrostatic pressure (from 0 up to 5 GPa with 1 GPa step) were performed. The calculation performed in this work in a TbFe3(BO3)4 crystal showed that the applied pressure can increase the phase transition temperature. Raman spectra of the TbFe3(BO3)4 crystal have been investigated at simultaneously high temperature and high pressure (up to 5.14 GPa and 465 K). The appearance of a soft mode was observed with decreasing temperature at normal pressure. The manifestations of the interaction of the structural and magnetic order parameters in the range from 13 to 50 K were observed at normal pressure. With increasing pressure and a fixed temperature, recovery of the soft modes is also observed. The experimental p–T phase diagram of TbFe3(BO3)4 was established. An increase in pressure leads to an increase in the temperature of transition.
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9.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zinenko V.I., Pavlovskiy M.S.
Заглавие : Lattice dynamics calculation of (La, Pb)MnO3
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Уральское отделение РАН
Место публикации : IV Euro-Asian Symposium "Trends in MAGnetism" Nanospintronics (EASTMAG-2010). School for young scientist "Spintronics": June 28 - Lule 2, 2010"Book of abstracts. - Ekaterinburg, 2010. - P.376
РИНЦ
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Pavlovskiy M. S., Dubrovskiy A. A., Shayhutdinov K. A., Terent'ev K. Yu.
Заглавие : Magnetostriction in hexagonal HoMnO3 single crystal
Коллективы : Moscow International Symposium on Magnetism, Московский государственный университет им. М.В. Ломоносова, Российский фонд фундаментальных исследований
Место публикации : Moscow International Symposium on Magnetism (MISM-2017): 1-7 July 2017 : book of abstracts. - 2017. - Ст.4PO-I1-46. - P.901 (Шифр 29916280)
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