Effect of the nonmagnetic layer in a Co/Cu/CoO trilayer structure on the exchange coupling in it

Journal Article · Fri Apr 15 04:00:00 EDT 2011 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776111030058· OSTI ID:22028099

Yu, S C ^[1]; Patrin, G S ^[2]; Song, Yu Y ^[1]; Turpanov, I A; Khalyapin, D L

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1. Chungbuk National University, BK21 Physics Program and Department of Physics (Korea, Republic of)
2. Russian Academy of Sciences, Kirensky Institute of Physics, Siberian Branch (Russian Federation)

The dependence of the exchange bias of epitaxial single-crystal Co/Cu/CoO trilayer films on the copper layer thickness and temperature is studied. The exchange bias of the hysteresis loops of the ferromagnetic cobalt layer as a function of the copper layer thickness is found to have a well-pronounced oscillating character. The oscillations manifest themselves over the entire temperature range in which an exchange bias takes place (77-220 K). The complex variation of the oscillation amplitude with the nonmagnetic layer thickness can be explained by the superposition of two interlayer exchange coupling oscillation periods ({lambda}{sub 1} Almost-Equal-To 10-11 Angstrom-Sign , {lambda}{sub 2} Almost-Equal-To 20 Angstrom-Sign ) having different amplitudes and temperature dependences.

• OSTI ID: 22028099
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 4 Vol. 112; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COBALT
COBALT OXIDES
COPPER
COUPLING
EPITAXY
FERROMAGNETIC MATERIALS
FERROMAGNETISM
HYSTERESIS
INTERFACES
LAYERS
MONOCRYSTALS
OSCILLATIONS
TEMPERATURE DEPENDENCE
THICKNESS
THIN FILMS