Počet záznamů: 1  

Changes in magnetic domain structure during twin boundary motion in single crystal Ni-Mn-Ga exhibiting magnetic shape memory effect

  1. 1.
    0467332 - FZÚ 2017 RIV US eng J - Článek v odborném periodiku
    Kopecký, Vít - Fekete, Ladislav - Perevertov, Oleksiy - Heczko, Oleg
    Changes in magnetic domain structure during twin boundary motion in single crystal Ni-Mn-Ga exhibiting magnetic shape memory effect.
    AIP Advances. Roč. 6, č. 5 (2016), 1-6, č. článku 056208. E-ISSN 2158-3226
    Grant CEP: GA ČR GA15-00262S; GA MŠMT LO1409
    Grant ostatní: FUNBIO(XE) CZ.2.16/3.1.00/21568
    Institucionální podpora: RVO:68378271
    Klíčová slova: martensite * alloy
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 1.568, rok: 2016

    The complexity of Ni-Mn-Ga single crystal originates from the interplay between ferromagnetic domain structure and ferroelastic twinned microstructure. Magnetic domain structure in the vicinity of single twin boundary was studied using magneto-optical indicator film and magnetic force microscopy technique. The single twin boundary of Type I was formed mechanically and an initial magnetization state in both variants were restored by local application of magnetic field (≈ 40 kA/m). The differently oriented variants exhibited either stripe or labyrinth magnetic domain pattern in agreement with the uniaxial magnetocrystalline anisotropy of the martensite. The twin boundary was then moved by compressive or tensile stress. The passage of the boundary resulted in the formation of granular or rake domains, respectively. Additionally, the specific magnetic domains pattern projected by twin boundary gradually vanished during twin boundary motion.
    Trvalý link: http://hdl.handle.net/11104/0266505

     
     
Počet záznamů: 1  

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