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Ferromagnetic resonance of a YIG film in the low frequency regime

Title
Ferromagnetic resonance of a YIG film in the low frequency regime
Author
이성재
Keywords
MAGNETIC-ANISOTROPY CONSTANTS; INSULATOR; GROWTH
Issue Date
2016-07
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF APPLIED PHYSICS, v. 120, NO 3, Page. 339051-339056
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 ferromagnetic resonance (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 degrees change in field orientation at 0.7 GHz. Published by AIP Publishing.
URI
https://aip.scitation.org/doi/10.1063/1.4956435http://repository.hanyang.ac.kr/handle/20.500.11754/74340
ISSN
0021-8979; 1089-7550
DOI
10.1063/1.4956435
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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