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Magnetic entropy change and large refrigerant capacity of Ce6i2Si3-type GdCoSiGe compound |
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| Authors: | Shen Jun Zhang Hu and Wu Jian-Feng |
| Institution: | Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China |
| Abstract: | Magnetic entropy change (Δ SM) and refrigerant capacity (RC) of Ce6Ni2Si3-type Gd6Co1.67Si2.5Ge0.5 compounds have been investigated. The Gd6Co1.67Si2.5Ge0.5 undergoes a reversible second-order phase transition at the Curie temperature TC = 296 K. The high saturation magnetization leads to a large Δ SM and the maximal value of Δ SM is found to be 5.9 J/kg,cdot,K around TC for a field change of 0--5 T. A broad distribution of the Δ SM peak is observed and the full width at half maximum of the Δ SM peak is about 101 K under a magnetic field of 5 T. The large RC is found around TC and its value is 424 J/kg. |
| Keywords: | Gd6Co1 67Si2 5Ge0 5 compound magnetocaloric effect refrigerant capacity |
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