Počet záznamů: 1

Metamagnetic transitions and magnetocaloric effect in epitaxial Ni–Co–Mn–In films

  1. 1.
    0353130 - FZU-D 2011 RIV US eng J - Článek v odborném periodiku
    Niemann, R. - Heczko, Oleg - Schultz, L. - Fähler, S.
    Metamagnetic transitions and magnetocaloric effect in epitaxial Ni–Co–Mn–In films.
    Applied Physics Letters. Roč. 97, č. 22 (2010), 222507/1-222507/3 ISSN 0003-6951
    Grant ostatní: AVČR(CZ) M100100913; DFG - SPP1239(DE) FA 453/7
    Výzkumný záměr: CEZ:AV0Z10100520
    Klíčová slova: Ni–Co–Mn–In films * martensitic transformation * magnetically induced transformation
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.820, rok: 2010

    Due to their large strains and multifunctionality, magnetic shape memory alloys are of particular interest for microsystems. Here epitaxially grown metamagnetic Ni–Co–Mn–In films on MgO (001) are analyzed which exhibit a magnetically induced austenite transition. This opens the way to use Ni–Co–Mn–In films in microactuators combining high stroke with high forces. Additionally these films exhibit an inverse magnetocaloric effect with an entropy change of 8.8 J kg−1 K−1 in 9 T at 353 K. The high surface-to-volume fraction of films promises a fast heat exchange, which is beneficial for efficient magnetic cooling.
    Trvalý link: http://hdl.handle.net/11104/0192457