The Influence of the Purity of Gd on the Magnetocaloric Effect in Gd5Si2-XGe2-XZn2x Alloys

Zhi Zeng; Xue Zhen Wang; Jian Huang; Jie Xiang; Xue Ling Hou

doi:10.4028/www.scientific.net/MSF.685.311

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HomeMaterials Science ForumMaterials Science Forum Vol. 685The Influence of the Purity of Gd on the...

The Influence of the Purity of Gd on the Magnetocaloric Effect in Gd₅Si_2-XGe_2-XZn_2x Alloys

Abstract:

Gd₅Si₂Ge₂-based alloys can exhibit a giant magnetocaloric effect (GMCE) which gives them the potential use in the cooling technologies^[1].Through this studies, it can be found that the purity of Gd had a great impact on the magnetocaloric effect in Gd₅Si_2-xGe2-xZn2x alloys. When 3N Gd used and 2x=0.01, Gd₅Si_2-xGe_2-xZn_2x around the curie point of 280k get the maximum magnetic entropy change of 14.0 J/(Kg.K) under the external magnetic field change from 0 to 1T, but when 2N Gd used and 2x=0.05, Gd₅Si_2-xGe_2-xZn_2x around the curie point of 284.2k under the external magnetic field change 1T get the maximum magnetic entropy change 6.65 J/(Kg.K).