Počet záznamů: 1  

Magnetocrystalline anisotropy of FePt: a detailed view

  1. 1. 0466854 - FZU-D 2017 RIV US eng J - Článek v odborném periodiku
    Khan, S.A. - Blaha, P. - Ebert, H. - Minár, J. - Šipr, Ondřej
    Magnetocrystalline anisotropy of FePt: a detailed view.
    Physical Review B. Roč. 94, č. 14 (2016), 1-10, č. článku 144436. ISSN 2469-9950
    Institucionální podpora: RVO:68378271
    Klíčová slova: magnetocrystalline anisotropy * FePt * LDA
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.836, rok: 2016

    To get a reliable ab initio value for the magnetocrystalline anisotropy (MCA) energy of FePt, we employ the full-potential linearized augmented plane wave (FLAPW) method and the full-potential Korringa-Kohn-Rostoker (KKR) Green function method. The MCA energies calculated by both methods are in good agreement with each other. As the calculated MCA energy significantly differs from experiment, it is clear that many-body effects beyond the local density approximation are essential. It is not really important whether relativistic effects for FePt are accounted for by solving the full Dirac equation or whether the spin-orbit coupling (SOC) is treated as a correction to the scalar-relativistic Hamiltonian. From the analysis of the dependence of the MCA energy on the magnetization angle and on the SOC strength it follows that the main mechanism of MCA in FePt can be described within second order perturbation theory.
    Trvalý link: http://hdl.handle.net/11104/0265123