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Amorphization Induced High Magneto-Caloric Effect of Gd55Al20Ni25 Ternary Alloy |
| DING Ding, XIA Lei, YU Zhong-Hua, DONG Yuan-Da |
| Institute of Materials, Shanghai University, Shanghai 200072 |
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| Cite this article: |
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DING Ding, XIA Lei, YU Zhong-Hua et al 2008 Chin. Phys. Lett. 25 3414-3417 |
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Abstract We report the amorphization induced high magneto-caloric effect (MCE) of recently developed Gd55Al15Ni30 bulk metallic glass (BMG). The magnetic properties of the Gd55Al15Ni30 BMG are investigated in comparison with that of its crystalline counterpart. It is found that amorphization can increase the saturation magnetization and decrease the hysteresis of Gd55Al15Ni30 alloys, which indicate the possible enhancement of MCE. The magnetic entropy changes and the refrigerant capacity of the BMG as well as the crystalline samples is calculated directly from isothermal magnetic measurements. The results show the amorphization induced high MCE of the alloy and the excellent refrigerant efficiency of Gd55Al15Ni30 bulk metallic glass.
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| Keywords:
75.50.Kj
75.30.Sg
71.20.Eh
74.25.Ha
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Received: 06 May 2008
Published: 29 August 2008
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