Title :
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
fDate :
9/1/1989 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
