Mn1. 35Fe0. 65P0. 45Si0. 55Bx合金的磁热效应
2014
对Mn1.35Fe0.65P0.45Si0.55Bx(x=0,0.01,0.02,0.03,0.04)合金的结构和磁热效应(MCE)进行了研究。XRD分析结果表明:Mn1.35Fe0.65P0.45Si0.55Bx髓(x=0,0.01,0.02,0.03,0.04)的合金均为Fe2P型六角结构,空间群为P62m,并随着B元素(原子分数)的增加,晶格常数。增大,c/a减小,晶胞体积V略有减小。磁性测量表明:随着B元素(原子分数)的增加,Curie温度(Tc)从228K升高到315K,热滞(△Thys)变化不大。0h1.5T外磁场下最大磁熵变(-△sMmax)下降,分别为3.6,2.5,2.0,1.7,1.9J/(kg·K)。
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