Interface atomic structures and magnetic anisotropy of Fe and Pd/Fe monatomic films on Pd(001) | Zendy

Tetsuro Ueno | Zendy; Masahiro Sawada | Zendy; Kazuhito Furumoto | Zendy; Tetsuro Tagashira | Zendy; Satoshi Tohoda | Zendy; A. Kimura | Zendy; Shinya Haraguchi | Zendy; Masahito Tsujikawa | Zendy; Tatsuki Oda | Zendy; H. Namatame | Zendy; M. Taniguchi | Zendy

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Interface atomic structures and magnetic anisotropy of Fe and Pd/Fe monatomic films on Pd(001)

Author(s) -

Tetsuro Ueno,

Masahiro Sawada,

Kazuhito Furumoto,

Tetsuro Tagashira,

Satoshi Tohoda,

A. Kimura,

Shinya Haraguchi,

Masahito Tsujikawa,

Tatsuki Oda,

H. Namatame,

M. Taniguchi

Publication year - 2012

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.85.224406

Subject(s) - monatomic ion , materials science , magnetic moment , condensed matter physics , magnetic circular dichroism , magnetic anisotropy , overlayer , magnetism , anisotropy , crystallography , magnetization , chemistry , magnetic field , optics , physics , organic chemistry , quantum mechanics , astronomy , spectral line

The magnetic anisotropy of monatomic Fe films on Pd(001) with or without a Pd overlayer was investigated from the standpoint of interface atomic structures. Quantitative analysis included low-energy electron diffraction and x-ray magnetic circular dichroism (XMCD) experiments, and first-principles calculations were also performed on monatomic Fe and Pd/Fe systems. It was revealed that Fe atoms intermix with the Pd substrate at room temperature. A spin reorientation transition occurs at a critical Fe thickness of 1.2 monolayers (ML) in Fe/Pd(001), while in-plane magnetic anisotropy is persistent in Pd/Fe/Pd(001) throughout the entire sample. The Fe 3$d$ spin and orbital magnetic moments for both systems are strongly enhanced near 1 ML Fe thickness, as compared to those of the bulk iron crystal. In addition, an induced magnetic moment in interfacial Pd atoms was observed by XMCD at the Pd ${M}_{2,3}$ core absorption edges. It was concluded that the $L{1}_{0}$-like tetragonally distorted interface atomic structure in monatomic Fe/Pd(001) induces the perpendicular magnetic anisotropy.

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