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.

Reverse magnetostructural transformation in Co-doped NiMnGa multifunctional alloys / S., Fabbrici; F., Albertini; A., Paoluzi; F., Bolzoni; R., Cabassi; Solzi, Massimo; Righi, Lara; Calestani, Gianluca. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 95:2(2009), pp. 022508-1-022508-3. [10.1063/1.3179551]

Reverse magnetostructural transformation in Co-doped NiMnGa multifunctional alloys

SOLZI, Massimo;RIGHI, Lara;CALESTANI, Gianluca
2009-01-01

Abstract

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.
2009
Reverse magnetostructural transformation in Co-doped NiMnGa multifunctional alloys / S., Fabbrici; F., Albertini; A., Paoluzi; F., Bolzoni; R., Cabassi; Solzi, Massimo; Righi, Lara; Calestani, Gianluca. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 95:2(2009), pp. 022508-1-022508-3. [10.1063/1.3179551]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2380404
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