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

Journal Article · Wed May 21 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4876907· OSTI ID:22275539

Zhu, J.; Li, Q.; Li, J. X.; Ding, Z.; Hua, C. Y.; Huang, M. J.; Lin, H. -J. ^[1]; Hu, Z. ^[2]; Won, C. ^[3]

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1. National Synchrotron Radiation Research Center and Department of Physics, National Tsing-Hua University, Hsinchu 30077, Taiwan (China)
2. Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden (Germany)
3. Department of Physics, Kyung Hee University, Seoul 130-701 (Korea, Republic of)

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.

• OSTI ID: 22275539
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 19 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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