摘要
根据热力学知识,分别从磁制冷材料的内能和吉布斯自由能角度出发,比较详细地推导了表征磁制冷材料性能的一个重要指标——磁熵变(ΔSM),在等温条件下的理论表达式,研究表明采用两种不同的推导方法的结果是一致的.
Based on the thermodynamics knowledge, and from the angles of internal energy and Gibbs free energy of magnetic refrigeration materials, the theoretical expression of magnetic entropy change （△SM）, which is an important perform ance index of magnetic refrigeration materials, has been derived more detailedly under isothermal conditions. The study shows that the results deduced from two different methods are the same.
出处
《内江师范学院学报》
2010年第2期87-89,共3页
Journal of Neijiang Normal University
关键词
磁制冷
磁熵变
热力学
磁热效应
magnetocaloric effect
magnetic refrigeration
magnetic entropy change
gibbs free energy
