Magnetic softening and hardening in Metglas (R) 2605SC at the onset of nanocrystallization

Mossbauer spectroscopy, coercive field and permeability were used to study the transformations produced by annealing at 375 degrees C as-quenched amorphous ribbons of Metglas(R) 2605 SC of nominal composition Fe81B13.5Si3.5C2. The coercive field showed a decrease (softening) in the 0-30 min range, f...

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Detalhes bibliográficos
Autores: Aburto, S, Jimenez, M, Gomez, R, Ridaura, R, Valenzuela, R, Marquina, V, Marquina-Fábrega, María Luisa
Formato: artículo
Estado:Versión publicada
Fecha de publicación:1998
País:México
Recursos:Universidad Nacional Autónoma de México
Repositorio:Sistema de Información de la Facultad de Ciencias, UNAM
OAI Identifier:oai:repositorio.fciencias.unam.mx:11154/2733
Acesso em linha:http://hdl.handle.net/11154/2733
Access Level:acceso abierto
Palavra-chave:Materials Science, Multidisciplinary
Descrição
Resumo:Mossbauer spectroscopy, coercive field and permeability were used to study the transformations produced by annealing at 375 degrees C as-quenched amorphous ribbons of Metglas(R) 2605 SC of nominal composition Fe81B13.5Si3.5C2. The coercive field showed a decrease (softening) in the 0-30 min range, followed by an increase (hardening) for annealing times above 30 min. Permeability exhibited the opposite behavior, with a maximum for about 30 min. The Mossbauer magnetic hyperfine spectra showed variations in the intensities ratios, which were related with macroscopic measurements in good agreement with the softening-hardening processes.