Magnetocaloric effect of (Gd1-xCex)Co2 compounds in low magnetic fields

稀有金属（英文版）, 2009, 28(5): 487-490. doi: 10.1007/s12598-009-0094-3

^1, , ^2, , ^3, , ^4,

1.Department of Physics and Electronic Informational Engineering, Neijiang Teachers College, Neijiang 641002, China;Key laboratory of Nonferrous Metal Matertals and New Processing Technology, Ministry of Education, Guangxi University, Nanning 530004, China

2.Key laboratory of Nonferrous Metal Matertals and New Processing Technology, Ministry of Education, Guangxi University, Nanning 530004, China

3.Department of Physics and Electronic Informational Engineering, Neijiang Teachers College, Neijiang 641002, China

4.Key laboratory of Nonferrous Metal Matertals and New Processing Technology, Ministry of Education, Guangxi University, Nanning 530004, China

Magnetocaloric effect of (Gd1-xCex)Co2 compounds in low magnetic fields

CHEN Xiang ^1, , ZHUANG Yinghong ^2, , FANG Fei ^3, , YAN Jialin ^4,

1.Department of Physics and Electronic Informational Engineering, Neijiang Teachers College, Neijiang 641002, China;Key laboratory of Nonferrous Metal Matertals and New Processing Technology, Ministry of Education, Guangxi University, Nanning 530004, China

2.Key laboratory of Nonferrous Metal Matertals and New Processing Technology, Ministry of Education, Guangxi University, Nanning 530004, China

3.Department of Physics and Electronic Informational Engineering, Neijiang Teachers College, Neijiang 641002, China

4.Key laboratory of Nonferrous Metal Matertals and New Processing Technology, Ministry of Education, Guangxi University, Nanning 530004, China

Keywords： magnetic refrigeration materials

The phases in the compounds (Gd1-xCex)Co2 with x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5 were investigated by X-ray diffraction, and the magneto-caloric effect for x = 0-0.4 was studied by magnetization measurements. The samples are almost single phase with a cubic MgCu2-type structure for x = 0-0.5. The magnetization decreases with an increase in Ce content. There is almost no magnetic transition for x = 0.5 at 100-350 K. The Curie temperature (Tc) of the (Gd1-xCex)Co2 compounds with x from 0.1 to 0.4 are 350, 344, 340, and 338 K respectively. second-order magnetic phase transition in these compounds.

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