Resonant and non-resonant phenomena in measurements of microwave absorption in Cobased amorphous ribbons
Título del documento: Resonant and non-resonant phenomena in measurements of microwave absorption in Cobased amorphous ribbons
Revista: Superficies y vacío
Base de datos: PERIÓDICA
Número de sistema: 000396211
ISSN: 1665-3521
Autors: 1
2
2
2
3
Institucions: 1Universidad Nacional Autónoma de México, Centro de Ciencias Aplicadas y Desarrollo Tecnológico, México, Distrito Federal. México
2Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México, Distrito Federal. México
3Instituto Politécnico Nacional, Escuela Superior de Física y Matemáticas, México, Distrito Federal. México
Any:
Període: Sep
Volum: 19
Número: 3
Paginació: 27-29
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico
Resumen en inglés Microwave absorption measurements in X band (9.4 GHz,), were carried out as a function of the transverse dc magnetic field, on as-cast amorphous ribbons of composition Co66Fe4B12Si13Nb4Cu prepared by melt spinning. Two different absorptions were observed: one at low dc fields (> 200 Oe) and the other one at high dc fields (< 1800 Oe). The high-field absorption has a resonant character and is associated with ferromagnetic resonance (FMR). The low-field absorption showed non-resonant features (hysteresis, non-Larmor dependence on the dc field) and can be associated with giant magnetoimpedance (GMI); it showed a good agreement when directly compared with GMI measurements. Some additional measurements were performed by rotating the sample's plane with respect to the dc field
Disciplines Física y astronomía,
Ingeniería
Paraules clau: Electromagnetismo,
Ingeniería de materiales,
Materiales magnéticos,
Ferromagnetismo,
Microondas,
Absorción
Keyword: Physics and astronomy,
Engineering,
Electromagnetism,
Materials engineering,
Magnetic materials,
Ferromagnetism,
Microwaves,
Absorption
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