Journal of Applied Physics · 1997 · 23 citations · 5 references
Natural SciencesMaterials SciencePhysicsElectromagnetismMagnetic MaterialsSemiconductor MaterialsFerromagnetismMagnetic CharacterizationMagnetic Properties Of SolidsMagnetism In SolidsNanowiresSpintronicsBrillouin ScatteringFinite-size EffectsMagnetic PropertiesMagneto-optic Kerr EffectMagneto-optical Kerr EffectMagneto-optical PropertiesSaturationSize Effects
We report on systematic studies of both the static and dynamic properties of FeNi wire arrays on GaAs(001) substrates. The wires were between 0.4 and 10 μm wide and were separated by twice their width. The static magnetic properties were investigated using magneto optical Kerr effect magnetometry. The dynamical magnetic properties (spin-waves) were investigated by Brillouin light scattering in the Voigt geometry. With an external field applied along the hard shape axis, the saturation field was observed to increase and the spin-wave energies decreased with decreasing wire size. For fields applied along the (easy) axis of the wire, we observed an increase in the coercive field as the width of the wire is decreased. The frequency of the surface mode was found to increase with decreasing wire size while the first volume mode frequency was found to be wire size independent.
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Size dependence of the magnetoresistance in submicron FeNi wires
A. O. Adeyeye, J. A. C. Bland, C. Daboo et al. · Journal of Applied Physics · 1996 · 89 citations