Библиографическое описание:Crystal phase stability and barocaloric efficiency of (NH4)3WO2F5 : научное издание / Evgeniy V. Bogdanov [et al.]. - Текст : непосредственный // Solid State Sciences. - 2024. - Т.157, №. - P. 107703. - ISSN 1293-2558. - ISSN 1873-3085, DOI 10.1016/j.solidstatesciences.2024.107703.
Аннотация:Calorimetric, dilatometric and pressure studies of (NH4)3WO2F5 were performed over a wide temperature range, including the Pm-3m ↔ Pa-3 phase transition. Comparison of the obtained results with data for related fluorides (NH4)3SnF7 and (NH4)3TiF7 undergoing the same structural changes showed a significant role of chemical pressure in the formation of thermal and barocaloric properties. A decrease in anomalous entropy in oxyfluoride, ΔS0 = 12.2 J/mol⋅K, is accompanied by a significant increase in sensitivity to hydrostatic pressure, dT0/dp = 93 K/GPa, the preservation of a large change in anomalous deformation δ(ΔV/V)0 = 0.45 % and a small temperature hysteresis, δT0 < 1 K. This combination of thermal characteristics has led to both a significant increase in extensive and intensive barocaloric parameters in the low pressures area, and to their high reversibility in the modes of increasing and decreasing pressure.
Издательство:Elsevier Science Publishing Company, Inc.
Источник:Solid State Sciences
Выпуск:Т.157
Номера страниц:107703
Держатель оригинала документа:Institute of Chemistry, Far Eastern Department of RAS, Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Institute of Engineering Systems and Energy, Krasnoyarsk State Agrarian University, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk State Medical University
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