Off resonance loss measurements in ferrites at 35 GHz

Author

McKinstry, Kevin D. ; Patton, Carl E. ; Wittenauer, M.A. ; Sankararaman, M. ; Nyenhuis, J. ; Friedlaender, F.J. ; Sato, H. ; Schindler, A.

Author_Institution

Dept. of Phys., Colorado State Univ., Fort Collins, CO, USA

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3482

Lastpage

3484

Abstract

The effective-linewidth technique at 35 GHz has been applied to polycrystalline YIG and single crystal Zn₂-Y hexagonal ferrite with planar anisotropy. Because of static field limitations, it was necessary to use low-field rather than high-field extrapolations to obtain the baseline cavity parameters for the loss determinations. The results show that the low-field off-resonance effective linewidth of these materials is 12 Oe for YIG and 30 Oe for Zn₂-Y. The results are consistent with estimated values of the intrinsic losses in these materials

Keywords

ferrites; ferromagnetic relaxation; ferromagnetic resonance; garnets; magnetic leakage; yttrium compounds; zinc compounds; 35 GHz; FMR; YFe5O12; Zn-Y-Fe-O; Zn₂-Y hexagonal ferrite; baseline cavity parameters; effective-linewidth technique; high frequency susceptibility; intrinsic losses; off resonance loss measurement; planar anisotropy; polycrystalline YIG; Crystalline materials; Equations; Ferrites; Loss measurement; Magnetic materials; Magnetic resonance; Magnetic resonance imaging; Magnetostatic waves; Resonant frequency; Saturation magnetization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42342

Filename

42342