Barocaloric effect near the structural phase transition in the Rb2KTiOF5 oxyfluoride
Barocaloric effect near the structural phase transition in the Rb2KTiOF5 oxyfluoride
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DOI：
10.1134/s1063783410020253
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发表时间：
2010-02-01
影响因子：
0.6
通讯作者：
Laptash, N. M.
中科院分区：
文献类型：
--
作者：
Gorev, M. V.;Flerov, I. N.;Laptash, N. M.
本文研究了氧氟化合物Rb_2KTiOF_5在0- 0.6GPa压力范围内、215 K温度下结构相变附近的压热效应。在215-280 K的温度范围内，广泛的和强烈的压热效应分别为δ S-BCE近似于-46 J/kg K和δ T（AD）近似于18 K。所进行的研究表明，外部流体静压力是一个非常有效的工具，用于改变熵和温度的晶体进行结构相变伴随着一个大的熵的变化。
The barocaloric effect (BCE) in the oxyfluoride Rb2KTiOF5 has been studied in the vicinity of the structural phase transition at a temperature of 215 K in the pressure range 0-0.6 GPa. It has been established that the extensive and intensive barocaloric effects are Delta S-BCE similar to -46 J/kg K and Delta T (AD) similar to 18 K, respectively, over a wide temperature range 215-280 K. The studies performed have shown that the external hydrostatic pressure is a very effective tool for changing the entropy and temperature of the crystals which undergo structural phase transitions accompanied by a large change in the entropy.