Journal of the Korean Institute of Telematics and Electronics A (전자공학회논문지A)
- Volume 32A Issue 1
- /
- Pages.97-102
- /
- 1995
- /
- 1016-135X(pISSN)
The study on effects of porosity grain size, magnetization and anisotropy field on the properties of ferromagnetic resonance
다결정 Mg-페라이트의 기공율, 입경, 포화 자화 및 이방성 자기장이 강자성 공명 특성에 미치는 영향 연구
Abstract
The ferromagnetic resonance properties of Mg ferrites which have various porosity grain size, and saturation magnetization are measured at one frequency. This allows a determination of the anisotropy field(Ha). The saturation magnetization multiplied by porosity is the resonance magnetic field. As the saturation magnetization increases, the linewidth decerases due to decrement of magnetic inhomogenity in sample. the porosity is a major factor broadening the linewidth for Mg ferrite when porosity is more thatn 6%, and the anisotropy field is dominant when porosity is less than 6%.
Keywords