Reverse magnetostructural transformation in Co-doped NiMnGa multifunctional alloys

被引：55
|
作者：
Fabbrici, S. [1 ]
Albertini, F. [1 ]
Paoluzi, A. [1 ]
Bolzoni, F. [1 ]
Cabassi, R. [1 ]
Solzi, M. [2 ,3 ]
Righi, L. [4 ]
Calestani, G. [4 ]
机构：
[1] IMEM CNR, I-43100 Parma, Italy
[2] Univ Parma, Dipartimento Fis, I-43100 Parma, Italy
[3] Univ Parma, CNISM, I-43100 Parma, Italy
[4] Univ Parma, Dipartimento Chim, GIAF, I-43100 Parma, Italy
来源：
APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 02期
关键词：
cobalt alloys; Curie temperature; doping profiles; gallium alloys; magnetisation; manganese alloys; nickel alloys; paramagnetic materials; reverse martensitic transformations; TRANSITIONS;
D O I：
10.1063/1.3179551
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We studied the composition dependence of the structural and magnetic properties of Co-doped Ni-Mn-Ga alloys around the Mn-rich composition Ni50Mn30Ga20. By varying the Co and Mn content we have been able to tune the critical temperatures. In particular, in a suitable composition range, the Curie temperature of martensite is lower than Curie temperature of austenite and lower than martensitic transformation temperature, giving rise to a paramagnetic gap between magnetically ordered martensite and austenite and to the occurrence of a reverse magnetostructural transformation.
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页数：3
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