期刊
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
卷 3, 期 2, 页码 243-253出版社
VIETNAM NATL UNIV
DOI: 10.1016/j.jsamd.2018.03.004
关键词
Magnetic recording; Magnetic anisotropy; Density functional theory; Electronic structure properties; Ultrathin film
资金
- Vietnam National University in Ho Chi Minh City (VNU-HCM) [C2015-20-21]
The Pd-Co alloy is a suitable candidate for the perpendicular magnetic recording and related applications. However, no research is available to clarify influences of local structures on the magnetic anisotropy of the Pd-Co alloy. Therefore, in this work, we studied the effects of Co arrangement on the magnetic anisotropy of ultrathin Pd4Co(111) film with 20% Co content by using the density functional theory calculations. We found that a Co monolayer in the surface layer of the ultrathin film offers a large in-plane magnetic anisotropy while the Co atoms mixed inside the Pd matrix exhibit the perpendicular magnetic anisotropy. Notably, a Co monolayer beneath the surface layer of the Pd matrix maximizes the perpendicular magnetic anisotropy up to 1.85 erg/cm(2). Electronic properties were also analyzed to clarify the magnetic anisotropy of the ultrathin film. (C) 2018 Vietnam National University in Ho Chi Minh City. Publishing services by Elsevier B.V.
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