Abstract
Spin-wave resonance spectra have been measured for Permalloy-copper films in which the chemical composition and hence the magnetic properties have been tailored as a function of depth. Samples in which the saturation magnetization varies linearly, quadratically and as the square root of the depth are considered. The spectra are interpreted in terms of a volume inhomogeneity model using information related to the growth process and that gained from subsequent Auger depth profiling of the same samples. This composition-magnetic property correlation has yielded good quantitative agreement between predictions of the model and experimental measurements.
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