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25 April 2024 |
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Article overview
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Ferromagnetic Resonance of a YIG film in the Low Frequency Regime | | Seongjae Lee
; Scott Grudichak
; Joseph Sklenar
; C. C. Tsai
; Moongyu Jang
; Qinghui Yang
; Huaiwu Zhang
; John B. Ketterson
; | | Date: |
24 Nov 2015 | | Abstract: | An improved method for characterizing the magnetic anisotropy of films with
cubic symmetry is described and is applied to an yttrium iron garnet (111)
film. Analysis of the FMR spectra performed both in-plane and out-of-plane from
0.7 to 8 GHz yielded the magnetic anisotropy constants as well as the
saturation magnetization. The field at which FMR is observed turns out to be
quite sensitive to anisotropy constants (by more than a factor ten) in the low
frequency (< 2 GHz) regime and when the orientation of the magnetic field is
nearly normal to the sample plane; the restoring force on the magnetization
arising from the magnetocrystalline anisotropy fields is then comparable to
that from the external field, thereby allowing the anisotropy constants to be
determined with greater accuracy. In this region, unusual dynamical behaviors
are observed such as multiple resonances and a switching of FMR resonance with
only a 1 degree change in field orientation at 0.7 GHz. | | Source: | arXiv, 1511.7892 | | Services: | Forum | Review | PDF | Favorites | |
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