In this article we present a detailed investigation of the structural and magnetic properties of exchange biased NiFe (ferromagnet)/FeMn (antiferromagnet) thin films. The influence of the shape anisotropy on exchange bias and the magnetization reversal mechanism in a sample with patterned lines is compared with a continuous two-dimensional reference sample. Polarized neutron reflectivity (PNR) is employed to study the magnetization reversal by analyzing the spin-flip and non-spin-flip reflectivities. PNR measurements show that the magnetization reversal in the reference two-dimensional film and patterned lines is by domain wall motion rather than coherent rotation of magnetization. © 2012 Springer-Verlag.

Jyoti Ranjan Mohanty

Department of Physics

S. Vandezande

S. Brems

M.J. Van Bael

T. Charlton

S. Langridge

R.M. Dalgliesh

K. Temst

C. Van Haesendonck

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Applied Physics A: Materials Science and Processing

Magnetization reversal studies of continuous and patterned exchange biased NiFe/FeMn thin films

Journal	Applied Physics A: Materials Science and Processing
ISSN	09478396