期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 383, 期 1-2, 页码 184-188出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2004.04.053
关键词
Ni2Mn1-xFexGa; ferromagnetic shape memory alloy; phase diagram; magnetic moment; phase transformation
Magnetic measurements on Ni2Mn1-xFexGa with 0 less than or equal to x less than or equal to 0.7 are made in the temperature range between 4.2 and 500K. A phase diagram of Ni2Mn1-xFexGa is determined from the results of the temperature dependence of the initial permeability. The Curie temperature T-C increases with the Fe concentration x and then makes a broad maximum around x = 0.6 on T-C versus x curve. The martensitic and reverse martensitic transformation temperatures decrease with increasing x. It is deduced that Fe atom in Ni2Mn1-xFexGa (0 less than or equal to x less than or equal to 0.7) has a large moment compared with that of pure a-Fe. (C) 2004 Elsevier B.V. All rights reserved.
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