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Magnetocaloric effect in heavy rare-earth elements doped Fe-based bulk metallic glasses with tunable Curie temperature

J. W. Li ; J. T. Huo ; Jia Yan Law (Institutionen för teknisk fysik, Materialens mikrostruktur ) ; C. T. Chang ; J. Du ; Q. K. Man ; X. M. Wang ; R. W. Li
Journal of Applied Physics (0021-8979). Vol. 116 (2014), 6, p. Art. no. 063902.
[Artikel, refereegranskad vetenskaplig]

The effects of heavy rare earth (RE) additions on the Curie temperature (T-C) and magnetocaloric effect of the Fe-RE-B-Nb (RE-Gd, Dy and Ho) bulk metallic glasses were studied. The type of dopping RE element and its concentration can easily tune T-C in a large temperature range of 120K without significantly decreasing the magnetic entropy change (Delta S-M) and refrigerant capacity (RC) of the alloys. The observed values of Delta S-M and RC of these alloys compare favorably with those of recently reported Fe-based metallic glasses with enhanced RC compared to Gd5Ge1.9Si2Fe0.1. The tunable T-C and large glass-forming ability of these RE doped Fe-based bulk metallic glasses can be used in a wide temperature range with the final required shapes.



Denna post skapades 2014-09-30. Senast ändrad 2015-03-10.
CPL Pubid: 203535

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Materialens mikrostruktur (2012-2015)

Ämnesområden

Metallurgi och metalliska material
Teknisk fysik

Chalmers infrastruktur