| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Excellent Glass Forming Ability and Refrigeration Capacity of a Gd55Al20Ni12Co10Mn3 Bulk Metallic Glass |
| DING Ding1, WANG Peng1, GUAN Quan1, TANG Mei-Bo2, XIA Lei1** |
1Laboratory for Microstructure, Shanghai University, Shanghai 200072
2Key Laboratory of Transparent and Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050
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| Cite this article: |
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DING Ding, WANG Peng, GUAN Quan et al 2013 Chin. Phys. Lett. 30 096104 |
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Abstract We investigate an excellent refrigeration capacity Rc of Gd55Al20Ni12Co10Mn3 bulk metallic glass (BMG). The Gd55Al20Ni12Co10Mn3 glassy rod is subjected to Cu mold suction-casting to prepare bulky metallic glasses, with a diameter of 3 mm. The glass forming ability as well as the magnetic properties of the BMG is investigated. The BMG exhibits a rather high glass formation ability with critical diameter of about 5.6 mm. The peak value of magnetic entropy change of about 8 J?kg?1K?1 is obtained in this alloy. This BMG alloy also exhibits excellent magnetic refrigerant capacity of about 880 J?kg?1 under the field of 5 T and 35% larger than that of other alloys reported previously, supposed to be closely related to the high effective moment (～7.3μB) of the Gd55Al20Ni12Co10Mn3 BMG.
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Received: 15 April 2013
Published: 21 November 2013
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| PACS: |
61.43.Dq
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(Amorphous semiconductors, metals, and alloys)
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81.05.Kf
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(Glasses (including metallic glasses))
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75.30.Sg
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(Magnetocaloric effect, magnetic cooling)
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81.20.-n
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(Methods of materials synthesis and materials processing)
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