Determining wave vector and material property from the phase-shift of spin-wave propagation

Mingqiang Bao, Kin Wong, Alexander Khitun, Jooyoung Lee, Zhibiao Hao, Kang L. Wang, Dok Won Lee, Shan X. Wang

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number27009
JournalEPL
Volume84
Issue number2
DOIs
Publication statusPublished - 2008 Oct 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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