Phase transitions in the (NH4)(2)NbOF5 oxyfluoride

Описание

Перевод названия: ФАЗОВЫЕ ПЕРЕХОДЫ В ОКСИФТОРИДЕ (NH4)2NBOF5

Тип публикации: статья из журнала

Год издания: 2010

Идентификатор DOI: 10.1134/S1063783410040189

Аннотация: The thermal and dielectric properties of the (NH4)(2)NbOF5 oxyfluoride have been investigated. It has been established that the structural phase transitions Cmc2(1) -> C2 -> Ia observed at the temperatures T (1) = 258.0 K and T (2) = 218.9 K exhibit a nonferroelectric nature. The hydrostatic pressure, which stabilizes the initial pПоказать полностьюhase and destabilizes the low-temperature phase, hardly affects the temperature range of stability of the intermediate phase. The model of sequential ordering of the structural elements due to phase transitions has been analyzed using experimental data on the entropies of the phase transitions.

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Издание

Журнал: PHYSICS OF THE SOLID STATE

Выпуск журнала: Vol. 52, Is. 4

Номера страниц: 781-788

ISSN журнала: 10637834

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

Персоны

  • Fokina V.D. (Siberian Federal University)
  • Bogdanov E.V. (Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences)
  • Gorev M.V. (Siberian Federal University)
  • Molokeev M.S. (Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences)
  • Flerov I.N. (Siberian Federal University)
  • Pogorel'tsev E.I. (Siberian Federal University)
  • Laptash N.M. (Institute of Chemistry, Far Eastern Branch,Russian Academy of Sciences)

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