Volume 84, Number 2, October 2008
|Number of page(s)||4|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||13 October 2008|
Determining wave vector and material property from the phase-shift of spin-wave propagation
Department of Electrical Engineering, University of California at Los Angeles - Los Angeles, CA 90095, USA
2 Geballe Laboratory for Advanced Materials, Department of Materials Science and Engineering, Stanford University - Stanford, CA 94305-4045, USA
Corresponding author: email@example.com
Accepted: 9 September 2008
Different to conventional ferromagnetic resonance methods, we use the phase-shift of spin-wave propagation to investigate spin-wave in conducting ferromagnetic thin films. Spin-wave wave vector (or wave number) k, a key parameter in the study of spin-wave dispersion and propagation, is extracted from the ratio of the phase-shift to the propagation distance and the ratio of the intercepts to the slopes of the plot of frequency square (f2) vs. the bias field (H). The wave vectors calculated by both methods are in good agreement. The in-plane anisotropy field Hk and saturation magnetization MS can also be extracted from the phase-shift map.
PACS: 75.30.Ds – Spin waves / 85.70.Ay – Magnetic device characterization, design, and modeling
© EPLA, 2008
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