PARAMETRIC REGENERATION OF SPIN OSCILLATIONS OF A THIN-FILM FERROMAGNETIC CAVITY BY MICROWAVE PUMPING

Authors
KALINIKOS BA KOVSHIKOV NG OSPANOV EA
Citation
Ba. Kalinikos et al., PARAMETRIC REGENERATION OF SPIN OSCILLATIONS OF A THIN-FILM FERROMAGNETIC CAVITY BY MICROWAVE PUMPING, Technical physics letters, 23(8), 1997, pp. 651-653
Citations number
4
Journal title
Technical physics letters → ACNP
ISSN journal
10637850
Volume
23
Issue
8
Year of publication
1997
Pages
651 - 653
Database
ISI
SICI code
1063-7850(1997)23:8<651:PROSOO>2.0.ZU;2-5
Abstract
An experimental investigation is made of the regeneration of spin osci llation losses in a thin-him ferromagnetic cavity by parametric pumpin g. It is observed that effective regeneration only takes place in narr ow frequency intervals in zones of strong dispersion near dipole gaps in the spin wave spectrum of thin films with bounded mobility of the s urface spins. It is shown that microwave parametric pumping can substa ntially improve the Q factor of dipole-exchange spin oscillations of t he thin-film cavity. (C) 1997 American Institute of Physics. [S1063-78 50(97)03208-4].