Strain effect on magnetocrystalline anisotropy of 5$d$ TM/Fe and TM/Fe/MgO(001) (TM$=$Ta, Ir, Pt, Au): A first principles study

ORAL

Abstract

Strain effect on magnetization and magnetocrystalline anisotropy (MCA) of TM/Fe(001) [TM$=$Ta, Ir, Pt and Au] with and without MgO(001) substrate has been investigated using first-principles calculations. It is found that perpendicular MCA of Pt/Fe(001) changes to in-plane MCA in the presence of MgO substrate, where lattice is extended by 3.8{\%} with respect to that without MgO. For Ta/Fe(001) and Au/Fe(001), PMCA is significantly enhanced by the MgO substrate, whereas MCA of Ir/Fe(001) remains in-plane. Furthermore, thickness dependence of MCA on both the TM and Fe layers will be also discussed.

*Supported by Basic Research Program (2010-0008842) and Research Centers Program (2009-0093818) through National Research Foundation of Korea.

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Authors

  • Purev Taivansaikhan

    • Department of Physics and Energy Harvest Storage Research Center, University of Ulsan, Ulsan 680-749, Republic of Korea

  • Odkhuu Dorj

    • Department of Physics, Incheon National University, Incheon 406-772, Republic of Korea
    • California State University Northridge

  • Sung-Hyon Rhim

    • Univ of Ulsan
    • Department of Physics and Energy Harvest Storage Research Center, University of Ulsan, Ulsan 680-749, Republic of Korea

  • Soon Cheol Hong

    • Univ of Ulsan
    • Department of Physics and Energy Harvest Storage Research Center, University of Ulsan, Ulsan 680-749, Republic of Korea
    • Department of Physics and Energy Harvest Storage Research Center , University of Ulsan, Ulsan 680-749, South Korea