FREQUENCY-DEPENDENCE OF THE FMR LINEWIDTH IN SINGLE-CRYSTAL BARIUM FERRITE PLATELETS

被引：32

作者：

KARIM, R

MCKINSTRY, KD

TRUEDSON, JR

PATTON, CE

机构：

[1] Department of Physics, Colorado State University, Ft. Collins

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1992年 / 28卷 / 05期

关键词：

D O I：

10.1109/20.179766

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Measurements of the frequency dependence of the room temperature ferromagnetic resonance(FMR) linewidth have been performed in well characterized barium hexaferrite single crystals at millimeter wave frequencies. A shorted waveguide measurement technique was used to obtain very clean FMR profiles in the frequency range of 55 to 90 GHz. FMR field values versus frequency determined from these profiles show good agreement with theoretical values for uniform mode precession. The FMR linewidth increases linearly with frequency at a rate of 0.54+/-.02 Oe/GHz and has a zero frequency extrapolation close to zero. These data yield a Landau-Liftshitz damping frequency of 4.6 X 10(6) rad/sec.

引用

页码：3225 / 3227

页数：3

共 13 条

[1] FREQUENCY-DEPENDENCE OF THE FERROMAGNETIC-RESONANCE LINEWIDTH OF BARIUM FERRITE [J].