TITLE

Quantifying perpendicular magnetic anisotropy at the Fe-MgO(001) interface

AUTHOR(S)
Lambert, C.-H.; Rajanikanth, A.; Hauet, T.; Mangin, S.; Fullerton, E. E.; Andrieu, S.
PUB. DATE
March 2013
SOURCE
Applied Physics Letters;3/25/2013, Vol. 102 Issue 12, p122410
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We show that Fe-MgO interfaces possess strong perpendicular magnetic anisotropy of 1.0 ± 0.1 erg/cm2 in fully epitaxial MgO/V/Fe/MgO(001) and MgO/Cr/Fe/MgO(001) heterostructures. The sign and amplitude of the total anisotropy are quantified as a function of Fe thickness using magnetometry and ferromagnetic resonance. There is a transition from out-of-plane to in-plane anisotropy for 6 Fe monolayers in V/Fe/MgO and only 4 monolayers in Cr/Fe/MgO. A detailed study of the Fe magnetization and effective anisotropy in both systems explains this difference and quantifies the Fe-MgO interface anisotropy.
ACCESSION #
86446856

 

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