Interface magnetic anisotropy between L1 0 -FePt and nonmagnetic layers

Takeshi Seki, Yusuke Kikuchi, Koki Takanashi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In order to examine the interface magnetic anisotropy at the interface between an L1 0-FePt layer and a nonmagnetic layer, the magnetic properties for thin films with Au buffer/L1 0-FePt/ capping layers were investigated, where MgO or Au was used as a capping layer. When the thickness of the L1 0-FePt layer (t FePt}) was reduced from 5 nm to 1.5 nm, MgO-capped L1 0-FePt showed larger perpendicular magnetic anisotropy than those of Au-capped L1 0 -FePt and uncapped L1 0-FePt. The plot of the magnetic anisotropy energy per sheet area as a function of t FePt suggested that the existence of the interface magnetic anisotropy between L1 0 -FePt and MgO layers, value of which was estimated to be 630 μJ/m 2.

Original languageEnglish
Article number6332923
Pages (from-to)3199-3202
Number of pages4
JournalIEEE Transactions on Magnetics
Volume48
Issue number11
DOIs
Publication statusPublished - 2012 Oct 29

Keywords

  • Interface magnetic anisotropy
  • L1 -FePt
  • MgO
  • Thin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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