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Title: Strain-modulated antiferromagnetic spin orientation and exchange coupling in Fe/CoO(001)

The effect of CoO spin orientation on exchange coupling was investigated in single-crystalline Fe/CoO/MnO/MgO(001) systems. An antiferromagnetic CoO spin reorientation transition from the in-plane direction to the out-of-plane direction was found to be associated with the in-plane strain transition in CoO film from compression to expansion. The induced uniaxial anisotropies by exchange coupling at the Fe/CoO interface are significantly stronger for the in-plane CoO spin orientation than for the out-of-plane CoO spin orientation. Our study provides a way to modify the exchange coupling in the ferromagnetic (FM)/antiferromagnetic (AFM) bilayer by modulating the strain in the AFM film.
Authors:
; ; ; ;  [1] ; ; ;  [2] ;  [3] ;  [4]
  1. Department of Physics, State Key Laboratory of Surface Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433 (China)
  2. National Synchrotron Radiation Research Center and Department of Physics, National Tsing-Hua University, Hsinchu 30077, Taiwan (China)
  3. Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden (Germany)
  4. Department of Physics, Kyung Hee University, Seoul 130-701 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22275539
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 19; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; ANTIFERROMAGNETIC MATERIALS; ANTIFERROMAGNETISM; ATOMIC FORCE MICROSCOPY; COBALT OXIDES; COMPRESSION; COUPLING; CRYSTAL STRUCTURE; EXPANSION; INTERFACES; IRON; LAYERS; MAGNESIUM OXIDES; MANGANESE OXIDES; MONOCRYSTALS; SPIN; SPIN ORIENTATION; STRAINS; THIN FILMS