Gallium Composition-Dependent Structural Phase Transitions in HoFe3- xGax(BO3)4 Solid Solutions: Crystal Growth, Structure, and Raman Spectroscopy Study | Научно-инновационный портал СФУ

Gallium Composition-Dependent Structural Phase Transitions in HoFe3- xGax(BO3)4 Solid Solutions: Crystal Growth, Structure, and Raman Spectroscopy Study

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1021/acs.cgd.9b01387

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. © 2020 American Chemical Society.

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Издание

Журнал: Crystal Growth and Design

Выпуск журнала: Vol. 20, Is. 2

Номера страниц: 1058-1069

ISSN журнала: 15287483

Издатель: American Chemical Society

Авторы

  • Moshkina Evgeniya (FRC KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia)
  • Krylova Svetlana N. (FRC KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Gudim Irina (FRC KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Molokeev Maxim S. (FRC KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia; Far Eastern State Transport Univ, Khabarovsk 680021, Russia)
  • Temerov Vladislav (FRC KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Pavlovskii M.S. (FRC KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Alex Vtyurin N. (FRC KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Krylov Alexander S. (FRC KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)

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