Magnetocaloric effect of(Tb1-xCex)Co2 alloys in low magnetic field
来源期刊：Journal of Rare Earths2009年第6期
论文作者：陈湘 庄应烘
文章页码：1027 - 1030
摘 要：The phases in alloys（Tb1-xCex）Co2 with x=0,0.1,0.2,0.3,0.4 and 0.5 were investigated by X-ray diffraction analysis,and the magnetocaloric effect for x=0-0.4 was studied by magnetization measurement.The samples were almost single phase with MgCu2-type cubic structure.The magnetization decreased with the increase of Ce.The Curie temperatures（Tc） of Tb1-xCexCo2 alloys with x from 0.1 to 0.4 were 180,165,160 and 152 K,respectively.For x=0.5 in the range from 100 K to 230 K,the point of magnetic transition was not obvious,and thus this article did not discuss the magnetocaloric effects for x=0.5.The maximum magnetic entropy change decreased with the increase of Ce content.The results of Arrott plots showed that the magnetic phase transition was second-order magnetic phase transition in those alloys.
陈湘1,2，庄应烘1
1. Key Laboratory of Nonferrous Metal Materials and New Processing Technology,Guangxi University2. Department of Physics and Electronic Informational Engineering,Neijiang Teachers College
摘 要：The phases in alloys（Tb1-xCex）Co2 with x=0,0.1,0.2,0.3,0.4 and 0.5 were investigated by X-ray diffraction analysis,and the magnetocaloric effect for x=0-0.4 was studied by magnetization measurement.The samples were almost single phase with MgCu2-type cubic structure.The magnetization decreased with the increase of Ce.The Curie temperatures（Tc） of Tb1-xCexCo2 alloys with x from 0.1 to 0.4 were 180,165,160 and 152 K,respectively.For x=0.5 in the range from 100 K to 230 K,the point of magnetic transition was not obvious,and thus this article did not discuss the magnetocaloric effects for x=0.5.The maximum magnetic entropy change decreased with the increase of Ce content.The results of Arrott plots showed that the magnetic phase transition was second-order magnetic phase transition in those alloys.
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