制备La_(1-x)Ca_xMnO_3磁液体的可行性研究  

Study on Feasibility of Preparation of La_(1-x)Ca_xMnO_3 Magnetic Liquids

作　　者：崔志敏[1] 刘丽妹[1] 马雪刚[1] 桑蓉栎[1] 张庆军[1] 

机构地区：[1]河北理工大学分析测试中心,唐山063009

出　　处：《材料导报》2008年第10期32-35,共4页Materials Reports

基　　金：河北理工大学科学研究基金(z200704)

摘　　要：综述了磁液体中磁性粒子的选择和制备、基液和表面活性剂的选择。通过对钙钛矿锰氧化物的磁热效应、纳米材料的制备及其它一系列优点的综述论证了制备La1-xCaxMnO3磁液体的可行性,并预期了La1-x-CaxMnO3磁液体的商业前景:不仅可以获得大的制冷量,还可以使结构设计简单化,使室温磁制冷商业化成为可能。The choice and synthesis of magnetic particles in magnetic liquids, and the choice of carrier liquids and surfactants are summarized. The feasibility of the preparation of La1-xCaxMnO3 magnetic liquids is studied by discussing the magneto-caloric effect, synthesis of nano material and other merits of perovskite manganite, and the commercial prospect is put forward that the big refrigerating capacity and simplification of structural design make the magnetic refrigeration at room temperature possible.

关 键 词：磁液体磁制冷磁工质 

分 类 号：O482.6[理学—固体物理]