Počet záznamů: 1

Element-specific analysis of the magnetic anisotropy in Mn-based antiferromagnetic alloys from first principles

  1. 1.
    0365576 - FZU-D 2012 RIV US eng J - Článek v odborném periodiku
    Khmelevskyi, S. - Shick, Alexander - Mohn, P.
    Element-specific analysis of the magnetic anisotropy in Mn-based antiferromagnetic alloys from first principles.
    Physical Review. B. Roč. 83, č. 22 (2011), "224419-1"-"224419-5" ISSN 1098-0121
    Grant CEP: GA ČR(CZ) GAP204/10/0330; GA AV ČR IAA100100912
    Výzkumný záměr: CEZ:AV0Z10100520
    Klíčová slova: magnetic anisotropy * antiferromagnetism
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.691, rok: 2011

    The magnetic anisotropy energy (MAE) and element-specific contributions to the MAE have been studied for Mn-based antiferromagnetic alloys with layered L10 structure within the framework of the local spin-density approximation and the fully relativistic torque method. It is found that the contribution to the total MAE from nonmagnetic 3d and 4d elements in MnNi and MnPd alloys are comparable to the contribution of the magnetic Mn atoms. In the 3d-5d MnIr and the 4d-5d MnRh alloys the Ir and Rh contributions are found to be dominating. The origin of this nonzero contribution into the MAE from the atom with zero spin moment is linked to the nontrivial atomic spin density distribution, which gives a zero moment only on average. We also find and discuss the strong dependence of the total and element-specific contributions to the MAE on the state of magnetic order.
    Trvalý link: http://hdl.handle.net/11104/0200785