Magnetocaloric effect of alloys Gd(Al1-xCox)(2)

作者：Deng Jianqiu; Zhu Jinining; Yan Jialin; Zhuang Yingtiong^*; Richu, Wang

来源：Journal of Rare Earths, 2007, 25(6): 783-786.

DOI：10.1016/S1002-0721(08)60025-3

• GdAl2
• magnetocaloric effect
• rare earth alloy

The magnetocaloric effect in alloys Gd(Al1-xCox)(2) with x =0, 0.05, and 0.10 were investigated using X-ray diffraction (XRD) and magnetization measurements. It was found that three alloys crystallized in a single phase with MgCu2 -type structure. The lattice parameter and Curie temperature decreased with increasing Co content, whereas the magnetic-entropy change increased. With a magnetic-field change of 2 T, the maximum of the magnetic-entropy change reached 4.6 J center dot kg(-1) center dot K-1 near Curie temperature at approximately 95 K in the alloy GdAl1.8Co0.2, which appeared to be an alternative candidate for active magnetic refrigerants working in the temperature range centered at 100 K.

• 出版日期2007-12
• 单位广西大学; 中南大学