Phase transition and magnetocaloric effect of Ni sub(55.2)Mn sub(18.6)Ga sub(26.2-x)Gd sub(x) (x=0, 0.05, 0.15) alloys

Phase transition process and magnetic entropy change -S of Ni sub(55.2)Mn sub(18.6)Ga sub(26.2-x)Gd sub(x)(x=0, 0.05, 0.15) alloys were studied. Ni sub(55.2)Mn sub(18.6)Ga sub(26.2-x)Gd sub(x)(x=0, 0.05, 0.15) alloys still underwent simultaneous structural and magnetic transitions and transform from...

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Bibliographic Details
Published inJournal of rare earths Vol. 27; no. 5; pp. 875 - 878
Main Authors Bao, Bo, Long, Yi, Duan, Jingfang, Wu, Guangheng, Ye, Rongchang, Wan, Farong
Format Journal Article
LanguageEnglish
Published 01.10.2009
Subjects
Alloys
Entropy
Ferromagnetism
Heating
Magnetic transitions
Phase transformations
Rare earth metals
Transforms
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Summary:Phase transition process and magnetic entropy change -S of Ni sub(55.2)Mn sub(18.6)Ga sub(26.2-x)Gd sub(x)(x=0, 0.05, 0.15) alloys were studied. Ni sub(55.2)Mn sub(18.6)Ga sub(26.2-x)Gd sub(x)(x=0, 0.05, 0.15) alloys still underwent simultaneous structural and magnetic transitions and transform from ferromagnetic martensitic phase to paramagnetic austenitic phase during heating. Under a field of 2 T, the maximum magnetic entropy change -S sub(M) of Ni sub(55.2)Mn sub(18.6)Ga sub(26.15)Gd sub(0.05) alloy was 7.7 J/kg super(.K at 317 K during heating and 8.6 J/kg) super(.)K at 314 K during cooling while it was 11.8 J/kg super(.K at 317 K in Ni) sub(5)5.2n sub(18.6)Ga sub(26.05)Gd sub(0.15) alloy during heating.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1002-0721
DOI:10.1016/S1002-0721(08)60353-1