随着众多领域中普及应用的传统气体膨胀（压缩）式制冷机缺点频现，尤其是对温室效应的加剧和臭氧层的破坏，使得一些学者和工程师转而致力于寻找新型制冷技术。磁制冷因具有低能耗、高效率、结构紧凑、易维护、绿色环保等优点，备受学术和工程界的青睐，且有望替代现有气体膨胀（压缩）制冷而成为一种新型节能制冷技术。近年来，室温磁制冷领域研究焦点主要集中在对具有巨磁热效应材料的室温磁制冷材料的研制上，像Gd，GdSiGe，MnFe(P，As)，La(Fe，Si)等系列材料，因磁热效应明显，工作温度较高，是典型的近室温和室温磁制冷材料，受到广泛关注。值得注意的是，基于现有室温磁制冷材料的Ericsson制冷循环不可避...The conventional vapor compression refrigerator used widely in many fields has many disadvantages, especially in enhancing greenhouse effect, depleting Ozone layer. Thus, many scholars and engineers have been searching for some new refrigeration technologies. Magnetic refrigeration, one of the alternative refrigeration technologies, has many merits, especially in high efficiency, stabilization, en...学位：理学硕士院系专业：物理与机电工程学院物理学系_凝聚态物理学号：1982007115233
