【摘要】 理论计算表明 :少量Ce的加入对Gd最大磁熵变的影响较小。对试样Gd10 0 -xCex(X =1、1.4、2 .2、5 )的测试结果表明 :在一定成份范围内 ,Ce元素的加入使Gd的居里温度呈线性降低 ;Ce的加入一定程度上降低材料绝热温变的峰值 ,但降幅不大 ,绝热温变的峰值对Ce含量的增加并不敏感。更多还原

【Abstract】 We attempt to investigate the magnetocaloric properties of Gd 100-xCe x (x=1、1.4、2.2、5) alloy by adding a small quatity of Ce into Gd. The calculat i on results indicate that the addition of trace Ce can hardly reduce the value of magnetic entropy change of Gd. With the increase of Ce content, the results of a ctual measurement revealed that Ce can reduce the maximum of ΔT ad, but the decli ne of maximum is very small, the change of maximum of ΔT ad isn’t se nsitive to the increase of the content of Ce; Curie temperature T c linearly decline s with the addition of Ce in certain composition.更多还原