Accession Number:

AD0416152

Title:

SATURATION EFFECTS IN FERRIMAGNETIC RESONANCE,

Descriptive Note:

Corporate Author:

LOCKHEED MISSILES AND SPACE CO INC SUNNYVALE CA

Personal Author(s):

Report Date:

1959-10-01

Pagination or Media Count:

8.0

Abstract:

Saturation curves of susceptibility as a function of rf magnetic field have been measured for a number of samples of polycrystalline yttrium iron garnet of varying linewidth. The curves exhibit a region of susceptibility linear in lh at high rf powers. The region of the initial decline in susceptibility is linear in hsquared which is predicted both by a small signal relation derived from Callens ferromagnetic dynamical equation and by a calculation of Schlomann which includes inhomogeneity interactions. A new method of determining the critical field for spinwave build-up is discussed. This method takes account of the fact that the initial decline in suscep tibility is not simply due to the Suhl mechanism for saturation in ferrites. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE