Magnetic domains and twin microstructure of single crystal Ni-Mn-Ga exhibiting magnetic shape memory effect

0452181 - FZÚ 2016 RIV US eng J - Článek v odborném periodiku
Heczko, Oleg - Kopecký, Vít - Fekete, Ladislav - Jurek, Karel - Kopeček, Jaromír - Straka, L. - Seiner, Hanuš
Magnetic domains and twin microstructure of single crystal Ni-Mn-Ga exhibiting magnetic shape memory effect.
IEEE Transactions on Magnetics. Roč. 51, č. 11 (2015), s. 2505304. ISSN 0018-9464. E-ISSN 1941-0069
Grant CEP: GA ČR GB14-36566G; GA MŠMT LO1409
Grant ostatní: FUNBIO(XE) CZ.2.16/3.1.00/21568
Institucionální podpora: RVO:68378271 ; RVO:61388998
Klíčová slova: magnetic domain * magnetic shape memory * NiMnGa
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.277, rok: 2015

Magnetic domains structure of a Ni–Mn–Ga single crystal was analyzed using a magneto-optical indicator film (MOIF), magnetic force microscopy (MFM), and scanning electron microscopy (SEM) (Lorenz contrast). Thanks to magnetically induced reorientation, the different configurations of magnetic domains can be obtained in the same place of the crystal. MOIF gives the overall domain configuration, while MFM shows the details of the structure revealing the domain branching. The magnetic domain structure in the vicinity of the mobile single twin boundary of Type II was observed by SEM and related to the complex twin structure of the martensite obtained from the calculation.
Trvalý link: http://hdl.handle.net/11104/0253205