Сибирский федеральный университет

Тип публикации: статья из журнала (материалы конференций, опубликованные в журналах)

Конференция: International Seminar on Ferroelastic Physics; Voronezh, RUSSIA; Voronezh, RUSSIA

Год издания: 2010

Идентификатор DOI: 10.1080/00150193.2010.484722

Ключевые слова: Phase transition, oxyfluoride, thermal properties, barocaloric effect, Ambient pressures, Caloric effects, Effective tool, Ionic group, Magneto-caloric effects, Oxyfluorides, Pressure phase, Structural orders, Hydrostatic pressure, Order disorder transitions, Rubidium, Thermodynamic properties, Phase diagrams

Аннотация: Using the data about the temperature-pressure phase diagram and the phase transition entropy at ambient pressure, intensive Delta T-AD and extensive Delta S-BCE barocaloric effects were estimated near structural order-disorder phase transitions in oxyfluorides Rb2KTiOF5 and (NH4)(2)NbOF5. It was found that hydrostatic pressure is an effective tool to change the entropy of compounds with ordering ionic groups in structure and to realize the significant caloric effects comparable with the values of electro- and magnetocaloric effects, characteristic for a number of materials, considered as promising solid refrigerants.

Журнал: FERROELECTRICS

Выпуск журнала: Vol. 397

Номера страниц: 76-80

ISSN журнала: 00150193

Место издания: ABINGDON

Издатель: TAYLOR & FRANCIS LTD

• Gorev M.V. (Siberian Federal University)
• Bogdanov E.V. (L.V. Kirensky Institute of Physics,Siberian Division,RAS)
• Flerov I.N. (Siberian Federal University)
• Voronov V.N. (L.V. Kirensky Institute of Physics,Siberian Division,RAS)
• Laptash N.M. (Institute of Chemistry,Far Eastern Division,RAS)

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