Multicaloric materials and effects

Multicaloric materials and effects
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DOI:
10.1557/mrs.2018.72
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发表时间:
2018-04
期刊:
影响因子:
5
通讯作者:
E. Stern-Taulats;T. Castán;L. Mañosa;A. Planes;N. Mathur;X. Moya
E. Stern-Taulats;T. Castán;L. Mañosa;A. Planes;N. Mathur;X. Moya
中科院分区:
材料科学3区
文献类型:
--
作者:
E. Stern-Taulats;T. Castán;L. Mañosa;A. Planes;N. Mathur;X. Moya

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多元材料显示出可以由一种以上类型的外部场同时或顺序驱动的热变化。使用一个以上的驱动场可以在更宽的操作温度范围内以更小的场幅度引起更大的热变化,并且还可以通过将一个控制参数转移到另一个控制参数来消除该控制参数中的滞后。多元效应背后的热力学已经得到了很好的建立,但到目前为止,只有少数多元材料进行了实验研究。在这里,我们描述了多元效应的基本原理,并讨论了代表性多元材料的性能。利用多热量效应可以帮助冷却设备的未来发展,其中的关键挑战包括能源效率和工作温度范围。
Multicaloric materials show thermal changes that can be driven simultaneously or sequentially by more than one type of external field. The use of more than one driving field can induce larger thermal changes, with smaller field magnitudes, over wider ranges of operating temperature, and can also eliminate hysteresis in one control parameter by transferring it to another. The thermodynamics behind multicaloric effects is well established, but only a small number of multicaloric materials have been experimentally studied to date. Here, we describe the fundamentals of multicaloric effects and discuss the performance of representative multicaloric materials. Exploiting multicaloric effects could aid the future development of cooling devices, where key challenges include energy efficiency and the span of the operating temperature.