中文

Journal of Shanghai University（Natural Science Edition） ›› 2010, Vol. 16 ›› Issue (1): 35-37.

• Material Science • Previous Articles     Next Articles

Magnetocaloric Effect of GdSiGeZn Compound under  Applied Low Magnetic Field

HOU Xue-ling1,2,HU Xing-hao2,WANG Xue-zhen2,ZENG Zhi2,XU Hui1,2,ZHOU Bang-xin1,2   

  1. （1. Key Laboratory for Advanced MicroAnalysis, Shanghai University, Shanghai 200072, China; 2. Institute of Materials, Shanghai University, Shanghai 200072, China）
  • Received:2009-09-24 Online:2010-02-28 Published:2010-02-28

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Abstract:

[It was found in a study on the magnetocaloric effect of Gd5Si2-xGe2Znx and Gd5Si2-zGe2-zZn2z serial alloys that a trace amount of change of Zn element has a great impact on magnetocaloric properties of GdSiGeZn. The maximum isothermal magnetic entropy change (ΔSM) reaches 20.70 J/(kg·K) at 284 K and 25.30 J/(kg·K) at 280 K for x=0.001 and 2z=0.001. These magnetocaloric properties are better than that of undoped Gd5Si2Ge2 compound. Experimental results show Gd5Si2Ge2compound which are alloyed by a trace amount of Zn element has better magnetocaloric properties than that of Gd5Si2Ge2compound alloyed by other elements reported in the literature. The overall magnetocaloric properties are the best among other Gd5Si2Ge2alloys upon 5 T applied field.

Key words:  magnetocaloric effect; isothermal magnetic entropy change; Curie temperature

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