Magnetocaloric effects in (Gd 1− x Tb x )Co 2

• Published in: Solid state communications Vol. 137; no. 5; pp. 275 - 277
• Main Authors: Zhou, K.W., Zhuang, Y.H., Li, J.Q., Deng, J.Q., Zhu, Q.M.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.02.2006
• Subjects: A. (Gd 1− xTb x)Co 2; D. Magnetocaloric effects; D. Second order change; 75.60.Ej; 75.20.En; 75.30.Sg; D. Magnetocaloric effects; A. (Gd 1− x Tb x )Co 2; D. Second order change
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/j.ssc.2005.11.023

The structures and magnetocaloric effects of (Gd 1− x Tb x )Co 2 ( x=0, 0.25, 0.4, 0.5, 0.6, 0.7, 0.8, and 1) pseudobinary compounds were investigated by X-ray powder diffraction and magnetic properties measurement. The results show that the T c of the alloy is near room temperature when X=0.6. The magnetic entropy changes of the compounds increase from 1.7 to 3.6 J/kg K with increasing the content of Tb under an applied field up to 2 T. All the compounds exhibit second order magnetic change. As a result, the values of their Δ S M are lower than that of some large magnetocaloric effect materials.