Description
The martensites of Heusler alloys based on Ni-Mn-Ga exhibit magnetically induced reorientation resulting in giant field induced strain up to 12 % in Ni-Mn-Ga-Co-Cu with 4 at.% of Co and Cu. As the driving force of the phenomenon is the magnetocrystalline anisotropy (MCA), we studied the evolution of MCA in different tetragonal single crystalline Ni-Mn-Ga-Co-Cu and compared with pure Ni-Mn-Ga. The MCA of martensite was determined from magnetic hysteresis loops. No clear trends were observed.
Primary authors
Mr
Michal Rameš
(Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, CZ-115 19, Czech Republic)
Mr
Oleg Heczko
(Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)
Mr
Ladislav Straka
(FZU – Institute of Physics CAS, Prague, CZ-182 21, Czech Republic)
Dr
Oleksii Sozinov
(LUT University, Lappeenranta)
Paper
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