Effect of praseodymium and cobalt substitution on magnetic properties and structures in La(Fe_(1–x)Si_x)_(13) compounds  

作　　者：傅斌 龙毅 史普辑 鲍博 张敏 常永勤 叶荣昌 

机构地区：[1]School of Materials Science and Engineering, University of Science and Technology Beijing

出　　处：《Journal of Rare Earths》2010年第4期611-613,共3页稀土学报（英文版）

基　　金：Project supported by the National Basic Research Program of China (2006CB601101);the National High Technology Research and Development Program of China (2007AA03Z440);the National Natural Science Foundation of China (50731007)

摘　　要：Magnetic properties and structures in La1-zPrz(Fe0.895–xCoxSi0.105)13 (x=0.07, 0.08; z=0, 0.2, 0.4) compounds were investigated. When Pr and Co substituted for La and Fe, the Curie temperature of the compounds was adjusted to around room temperature. The magnetic phase transition was driven from first-order to second-order due to Co substitution. As a second-order phase transition material, the MCE of La0.6Pr0.4(Fe0.825Co0.07Si0.105)13, whose relative cooling power was 175 J/kg under a field change of 2 T, ...Magnetic properties and structures in La1-zPrz(Fe0.895–xCoxSi0.105)13 (x=0.07, 0.08; z=0, 0.2, 0.4) compounds were investigated. When Pr and Co substituted for La and Fe, the Curie temperature of the compounds was adjusted to around room temperature. The magnetic phase transition was driven from first-order to second-order due to Co substitution. As a second-order phase transition material, the MCE of La0.6Pr0.4(Fe0.825Co0.07Si0.105)13, whose relative cooling power was 175 J/kg under a field change of 2 T, ...

关 键 词：La（Fe1–xSix）13 compounds Curie temperature （TC） relative cooling power （RCP） rare earths 

分 类 号：TG146.418[一般工业技术—材料科学与工程]