Thermal properties and phase transitions in (NH4)(3)ZrF7

Описание

Тип публикации: статья из журнала

Год издания: 2013

Идентификатор DOI: 10.1016/j.jfluchem.2013.07.001

Ключевые слова: Cubic fluorides, Phase transitions, Entropy, Thermal dilatation, Permittivity, Pressure effect, Cubic fluorides, Entropy, Permittivity, Phase transitions, Pressure effect, Thermal dilatation

Аннотация: The heat capacity, thermal dilatation, permittivity, and T-p phase diagram of (NH4)(3)ZrF7 have been studied in wide temperature and pressure ranges. Two phase transitions were found in addition to previously known structural transformations. The stability of crystal phases to temperature and pressure has been examined and a possibПоказать полностьюility of transition between two cubic phases has been discussed. The total excess entropy change Sigma Delta S-i = RIn6 is characteristic for the order-disorder processes, but its stepwise increase is not consistent with the structural model associated with the strong disorder assumed in the initial cubic phase. (C) 2013 Elsevier B.V. All rights reserved.

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Издание

Журнал: JOURNAL OF FLUORINE CHEMISTRY

Выпуск журнала: Vol. 154

Номера страниц: 1-6

ISSN журнала: 00221139

Место издания: LAUSANNE

Издатель: ELSEVIER SCIENCE SA

Авторы

  • Fokina V.D. (L.V. Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Gorev M.V. (Siberian Federal University)
  • Bogdanov E.V. (Krasnoyarsk State Agrarian University)
  • Pogoreltsev E.I. (Siberian Federal University)
  • Flerov I.N. (Siberian Federal University)
  • Laptash N.M. (Institute of Chemistry,Far Eastern Department of RAS)

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