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Magnetocaloric effect of GdCo2−xAlx compounds |
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| Authors: | Zhengfei Gu Junqin Li Gang Cheng |
| Affiliation: | a Department of Information Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004, PR China b Taizhou Special Equipment Supervision and Inspection Center, Taizhou, Zhejiang 318000, PR China c Department of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, PR China |
| Abstract: | The structure, magnetic property and magnetocaloric effect of GdCo2−xAlx (x=0, 0.06, 0.12, 0.18, 0.24, 0.4) compounds have been investigated by X-ray diffraction (XRD) and magnetic measurement techniques. The experimental results show that the GdCo2−xAlx (x≤0.4) compounds are single phase with a Laves-phase MgCu2-type structure. The Curie temperature Tc initially increases, and then decreases with increasing Al content. The maximum value of Tc, 418 K, is reached for the compound with x=0.06. The magnetic entropy change, which is determined from the temperature and field dependence of the magnetization by the Maxwell relation, decreases almost linearly with increasing Al content. |
| Keywords: | 71.20.Eh 74.25.Ha 75.30.Sg |
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