Scaling laws for the magnetocaloric effect in second order phase transitions: From physics to applications for the characterization of materials
Scaling laws for the magnetocaloric effect in second order phase transitions: From physics to applications for the characterization of materials
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DOI：
10.1016/j.ijrefrig.2009.12.019
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发表时间：
2010-05-01
期刊：
影响因子：
--
通讯作者：
Conde, A.
中科院分区：
文献类型：
--
作者：
Franco, V.;Conde, A.
给出了最近提出的关于磁熵变化的唯象普适曲线的详细构造过程，以及控制不同磁热相关量场依赖的指数。还概述了万能曲线的实际应用：作为材料性能的简单筛选程序，作为对实验室中没有的温度或场进行外推的方法，用于减少实验噪声，校正非饱和条件的影响，或作为消除少数磁相的贡献的一种方法，等等。(C)2009年爱思唯尔有限公司和IIR。版权所有。
The detailed procedure for constructing the recently proposed phenomenological universal curve for the magnetic entropy change is presented, together with the exponents which control the field dependence of the different magnetocaloric-related magnitudes. Practical applications of the universal curve are also outlined: as a simple screening procedure of the performance of materials, as a method for making extrapolations to temperatures or fields not available in the laboratory, for the reduction of the experimental noise, for correcting the influence of non-saturating conditions, or as a way to eliminate the contribution of minority magnetic phases, among others. (C) 2009 Elsevier Ltd and IIR. All rights reserved.