Ferroelastic phase transition in the family of double fluoride crystals by Raman spectroscopy : материалы временных коллективов | Научно-инновационный портал СФУ

Ferroelastic phase transition in the family of double fluoride crystals by Raman spectroscopy : материалы временных коллективов

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: 14th European Meeting on Ferroelectricity (EMF); Lausanne, SWITZERLAND; Lausanne, SWITZERLAND

Год издания: 2020

Идентификатор DOI: 10.1080/00150193.2020.1713348

Ключевые слова: fluorides, raman spectra, lattice disordering

Аннотация: In order to clarify ordering mechanisms of ferroic phase transitions in double fluoride salts (NH4)(3)SnF7, (NH4)(3)GeF7 and (NH4)(3)TiF7, their Raman scattering spectra have been studied in wide ranges of frequencies (20-3400 cm(-1)) and temperatures (8-410 K). Substitution of the central ion in the octahedron groups was found to change not only the phase transition types and sequences, but to modify the types of structural disorder as well, which is a special feature of these high-symmetry fluoride crystals. In order to clarify ordering mechanisms of ferroic phase transitions in double fluoride salts (NH4)3SnF7, (NH4)3GeF7 and (NH4)3TiF7, their Raman scattering spectra have been studied in wide ranges of frequencies (20–3400 cm−1) and temperatures (8–410 K). Substitution of the central ion in the octahedron groups was found to change not only the phase transition types and sequences, but to modify the types of structural disorder as well, which is a special feature of these high-symmetry fluoride crystals. © 2020 Taylor & Francis Group, LLC.

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Издание

Журнал: FERROELECTRICS

Выпуск журнала: Vol. 568, Is. 1

Номера страниц: 185-190

ISSN журнала: 00150193

Место издания: ABINGDON

Издатель: TAYLOR & FRANCIS LTD

Авторы

  • Gerasimova Y.V (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia; Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk, Russia)
  • Krylov A.S. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia)
  • Vtyurin A.N. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia; Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk, Russia)
  • Laptash N.M. (RAS, Far Eastern Branch, Inst Chem, Vladivostok, Russia)
  • Krylova S.N. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia)

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