Reverse magnetostructural transitions by Co and In doping NiMnGa alloys: structural, magnetic and magnetoelastic properties

0367546 - FZÚ 2012 RIV CH eng J - Journal Article
Albertini, F. - Fabbrici, S. - Paoluzi, A. - Kamarád, Jiří - Arnold, Zdeněk - Righi, L. - Solzi, M. - Porcari, G. - Pernechele, C. - Serrate, D. - Algarabel, P.
Reverse magnetostructural transitions by Co and In doping NiMnGa alloys: structural, magnetic and magnetoelastic properties.
Materials Science Forum. Roč. 684, č. 5 (2011), 151-163. ISSN 0255-5476
Institutional research plan: CEZ:AV0Z10100521
Keywords : martensitic transformation * Heulser alloys * NiMnGa * superelastic alloys * magnetic shape memory * reverse transformation
Subject RIV: BM - Solid Matter Physics ; Magnetism

We review the composition dependence of the structural and magnetic properties of the Co-doped Ni-Mn-Ga Ferromagnetic Shape Memory Alloy around the Mn-rich composition Ni50Mn30Ga20. The presence of Co affects the critical temperatures and alters the exchange interactions of martensite and austenite to different extents; by varying the compositon it is possible to tune the critical temperatures and to induce a "paramagnetic gap" between the magnetically ordered martensite and magnetic austenite, thus givind rise to a reverse magnetostructural transformation.
Permanent Link: http://hdl.handle.net/11104/0202186