| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Excellent Magnetocaloric Effect in Er60Al18Co22 Bulk Metallic Glass |
| HUI Xi-Dong**, XU Zhi-Yi, WANG En-Rui, CHEN Guo-Liang, LU Zhao-Ping |
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083
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HUI Xi-Dong, XU Zhi-Yi, WANG En-Rui et al 2010 Chin. Phys. Lett. 27 117502 |
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Abstract Excellent magnetocaloric effect with a maximum entropy change and refrigeration capacity of 17.6 J⋅kg−1⋅K−1 and 546 J⋅kg−1, respectively, has been discovered in the Er60Al18Co22 bulk metallic glass under the field of 50 kOe in the temperature range of helium liquefaction. This MCE results from the second-order magnetic transition from the paramagnetic to the ferromagnetic state. Our analysis based on mean-field theory suggests that the excellent MCE is attributed to the strong exchange of magnetic moment in the glassy structure.
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| Keywords:
75.30.Sg
75.20.En
75.40.Cx
75.50.Cc
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Received: 29 May 2010
Published: 22 October 2010
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| PACS: |
75.30.Sg
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(Magnetocaloric effect, magnetic cooling)
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75.20.En
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(Metals and alloys)
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75.40.Cx
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(Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))
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75.50.Cc
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(Other ferromagnetic metals and alloys)
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