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Spin-glass behavior and magnetocaloric effect in Tb-based bulk metallic glass |
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| Authors: | J Du Q Zheng E Brück KHJ Buschow WJ Feng ZD Zhang |
| Institution: | a Shenyang National Laboratory for Materials Science, Institute of Metal Research, 72 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China b International Centre for Materials Physics, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China c Van der Waals-Zeeman Instituut, Universiteit van Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands d Reactor Institute Delft, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands |
| Abstract: | A noncollinear-ferromagnetic spin-glass-like state was observed in Tb55Co20Al25 bulk metallic glass due to the strong random magnetic anisotropy. Associated with this behavior, we observed a comparatively large magnetic entropy change (ΔSm is 9.75 J K−1 kg−1) in a field change of 7 T and a correspondingly high value of the magnetic refrigeration capacity (RC is 540 J kg−1) with almost no hysteresis loss in the vicinity of the so-called Curie temperature. This opens the possibility of using this material for magnetic cooling purposes. |
| Keywords: | 75 30 Sg 75 50 Lk 81 05 Kf |
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