Reverse magnetostructural transformation in Co-doped NiMnGa multifunctional alloys

We studied the composition dependence of the structural and magnetic properties of Co-doped Ni-Mn-Ga alloys around the Mn-rich composition Ni 50 Mn 30 Ga 20 . By varying the Co and Mn content we have been able to tune the critical temperatures. In particular, in a suitable composition range, the Cur...

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Bibliographic Details
Published in:Applied physics letters 2009-07, Vol.95 (2), p.022508-022508-3
Main Authors: Fabbrici, S., Albertini, F., Paoluzi, A., Bolzoni, F., Cabassi, R., Solzi, M., Righi, L., Calestani, G.
Format: Article
Language:English
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Summary:We studied the composition dependence of the structural and magnetic properties of Co-doped Ni-Mn-Ga alloys around the Mn-rich composition Ni 50 Mn 30 Ga 20 . 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.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3179551