Fine structure and auto-oscillations of subsidiary absorption in tangentially magnetized YIG films

Autor:	I. Laulicht, Y. Kraftmakher
Rok vydání:	1996
Předmět:	Condensed matter physics Butterfly curve (transcendental) Field (physics) Spin wave Oscillation Chemistry Dispersion relation Excited state Materials Chemistry General Chemistry Condensed Matter Physics Absorption (electromagnetic radiation) Ferromagnetic resonance
Zdroj:	Solid State Communications. 100:201-206
ISSN:	0038-1098
DOI:	10.1016/0038-1098(96)00398-5
Popis:	Nonlinear ferromagnetic-resonance phenomena in tangentially magnetized yttrium-iron-garnet films are studied. The auto-oscillation and the fine-structure phenomena are found to appear and disappear simultaneously. The auto-oscillation frequency changes with the d.c. field within the range of a single fine-structure peak. Data analysis implies that this peak does not represent a single spin-wave mode but many groups of spin waves. This inhomogeneous broadening and the inter peak spacing are analyzed and explained in terms of conventional dispersion relations. A careful recording of the lineshape shows that it is essentially a rectangle. An attempt to explain this shape in terms of Suhl's theory is made. These findings support the assertion that a fine-structure peak is due to a fine dip in the butterfly curve and usually represents many groups of parametrically excited spin waves.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4d418b46fc9e48a32a3e7ae87e8d0eb6 https://doi.org/10.1016/0038-1098(96)00398-5 Zobrazit plný text záznamu Full Text from ScienceDirect