Mechanically induced demagnetization and remanent magnetization rotation in Ni-Mn-Ga (-B) magnetic shape memory alloy

0434049 - FZÚ 2015 RIV US eng J - Journal Article
Straka, L. - Soroka, A. - Heczko, Oleg - Hänninen, H. - Sozinov, A.
Mechanically induced demagnetization and remanent magnetization rotation in Ni-Mn-Ga (-B) magnetic shape memory alloy.
Scripta Materialia. Roč. 87, SEP (2014), s. 25-28. ISSN 1359-6462. E-ISSN 1872-8456
R&D Projects: GA ČR(CZ) GAP107/11/0391
Grant - others:AV ČR(CZ) M100101241
Institutional support: RVO:68378271
Keywords : heusler phases * ferromagnetic shape memory * magnetic properties * coercivity
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.224, year: 2014
http://www.sciencedirect.com/science/article/pii/S1359646214002176

Boron doping increased the magnetic coercivity from 1.5 to 22 kA m(-1) (19 to 276 Oe) in Ni-50 Mn28.5Ga21.5 single crystals, which in combination with the multiferroic character of the material resulted in interesting new magnetomechanical effects. The material behaved as a semi-hard ferromagnet, which-in contrast to conventional ferromagnets-could be demagnetized by applying light (2 MPa) mechanical loading. We envisage that remanent magnetization rotation by magnetic field or by mechanical stress can occur if the hysteresis is further enlarged.
Permanent Link: http://hdl.handle.net/11104/0238188