Exchange anisotropy in epitaxial NiO(001)-fcc Co bilayers
- 1 May 2000
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 87 (9) , 4936-4938
- https://doi.org/10.1063/1.373208
Abstract
We have sputter deposited NiO–Co bilayers on MgO (001) substrates. NiO grows epitaxially on MgO at 800 °C and subsequently room temperature deposited Co films have a fcc crystal structure in epitaxy with the oxide underlayer. Bias fields higher than 700 Oe at 5 K were reported. Polar Kerr effect measurements evidence saturation fields for perpendicular magnetization up to 15 T at low temperature, proof for a strong NiO–Co exchange interaction. The formation of a domain wall in the Co layer is a possible mechanism for such large saturation fields.This publication has 9 references indexed in Scilit:
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