Elsevier

Materials Letters

Volume 173, 15 June 2016, Pages 239-241
Materials Letters

Excellent magneto-caloric effect of a low cost Gd34Ni22Co11Al33 metallic glass

https://doi.org/10.1016/j.matlet.2016.03.053Get rights and content

Highlights

  • A low cost Gd34Ni22Co11Al33 metallic glass is fabricated by melt spinning.

  • The metallic glass exhibits larger magnetic entropy change and excellent magneto-caloric effect.

  • The high Al concentration changes the electronic interaction which leads to the low Curie temperature.

Abstract

In the present work, we reported a low cost Gd34Ni22Co11Al33 metallic glass containing less Gd element but exhibiting excellent magneto-caloric effect (MCE). The Gd34Ni22Co11Al33 metallic glass prepared into the shape of ribbon shows typical amorphous characteristics in X-ray diffraction pattern and a magnetic entropy change peak (−ΔSmpeak) up to 9.9 J kg−1 K−1 at about 52.5 K under a field of 5 T. The mechanism for the rather high −ΔSmpeak as well as low Curie temperature of the Gd34Ni22Co11Al33 metallic glass was investigated.

Section snippets

Acknowledgment

The work described in this paper was supported by the National Nature Science Foundation of China (Grant nos. 51171100 and 51271103) and the Chongqing Research Program of Basic Research and Frontier Technology (Grant nos. cstc2013jcyjjq50002 and cstc2015jcyjBX0039).

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