Effect of praseodymium and cobalt substitution on magnetic properties and structures in La(Fe1–xSix)13 compounds
来源期刊：JOURNAL OF RARE EARTHS2010年第4期
论文作者：傅斌 龙毅 史普辑 鲍博 张敏 常永勤 叶荣昌
文章页码：611 - 613
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, was larger than some representative first-order phase transition materials. Suitable Curie temperature and large values of RCP made it an attractive potential candidate for room temperature magnetic refrigeration application.
傅斌，龙毅，史普辑，鲍博，张敏，常永勤，叶荣昌
School of Materials Science and Engineering, University of Science and Technology Beijing
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, was larger than some representative first-order phase transition materials. Suitable Curie temperature and large values of RCP made it an attractive potential candidate for room temperature magnetic refrigeration application.
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