Physics – Condensed Matter – Materials Science
Scientific paper
2010-06-29
J. Phys.: Condens. Matter 22 406001 (2010)
Physics
Condensed Matter
Materials Science
7 pages, 6 figures, submited to Journal of Physics: Condensed Matter
Scientific paper
10.1088/0953-8984/22/40/406001
Microstrip ferromagnetic resonance and Brillouin scattering are used to provide a comparative determination of the magnetic parameters of thin permalloy layers interfaced with a non-magnetic (Al2O3) or with an antiferromagnetic oxide (NiO). It is shown that the perpendicular anisotropy is monitored by an interfacial surface energy term which is practically independent of the nature of the interface. In the investigated interval of thicknesses (5-25 nm) the saturation magnetisation does not significantly differ from the reported one in bulk permalloy. In-plane uniaxial anisotropy and exchange-bias anisotropy are also derived from this study of the dynamic magnetic excitations and compared to our independent evaluations using conventional magnetometry
Chérif Salim Mourad
Moch Philippe
Paumier Fabien
Roussigné Yves
Youssef Jamal Ben
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