Heat capacity and structure of Rb2KMeO3F3 (Me: Mo, W) elpasolites

Описание

Тип публикации: статья из журнала

Год издания: 2012

Идентификатор DOI: 10.1016/j.solidstatesciences.2011.11.019

Ключевые слова: Oxyfluorides, Crystal structure, Phase transition, Calorimetry, Calorimetry, Crystal structure, Oxyfluorides, Phase transition, Calorimetric measurements, Central atom, Entropy changes, Heat capacity measurements, Oxyfluorides, Standard molar enthalpy, Thermal parameters, Calorimetry, Crystal structure, Entropy, Phase transitions, Rubidium, Single crystals, Specific heat, Crystal atomic structure

Аннотация: X-ray and heat capacity measurements were performed on Rb2KMoO3F3 and Rb2KWO3F3 single crystals. A significant difference in the thermal parameters of atoms in 4a and 8c sites of Fm-3m structure was found, which depended on the central atom. Calorimetric measurements have revealed the heat capacity anomalies at 195 and 67 K, respecПоказать полностьюtively, in Rb2KMoO3F3 and Rb2KWO3F3. The standard molar enthalpy and entropy were determined. Entropy changes associated with phase transitions in oxyfluorides under study and related Rb2KTiOF5 are discussed. 2011 Elsevier Masson SAS. All rights reserved.

Ссылки на полный текст

Издание

Журнал: SOLID STATE SCIENCES

Выпуск журнала: Vol. 14, Is. 1

Номера страниц: 166-170

ISSN журнала: 12932558

Место издания: AMSTERDAM

Издатель: ELSEVIER SCIENCE BV

Авторы

  • Kartashev A.V. (Institute of Engineering Physics and Radio Electronics,Siberian Federal University)
  • Molokeev M.S. (L. V. Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Fokina V.D. (L. V. Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Gorev M.V. (Institute of Engineering Physics and Radio Electronics,Siberian Federal University)
  • Flerov I.N. (Institute of Engineering Physics and Radio Electronics,Siberian Federal University)
  • Isaenko L.I. (Institute of Geology and Mineralogy,Russian Academy of Sciences)
  • Zhurkov S.A. (Institute of Geology and Mineralogy,Russian Academy of Sciences)

Вхождение в базы данных