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Crystallization behavior and magnetic properties of Cu-containing Fe- Cr- Mo- Ga- P- C- B alloys

Opened Access Crystallization behavior and magnetic properties of Cu-containing Fe- Cr- Mo- Ga- P- C- B alloys

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Título Alternativo: Comportamiento de cristalización y las propiedades magnéticas de Cu-que contiene aleaciones de Fe-Cr-Mo-Ga-PCB
Autor: Borrego Moro, Josefa María
Conde Amiano, Clara Francisca
Conde Amiano, Alejandro
Departamento: Universidad de Sevilla. Departamento de Física de la Materia Condensada
Fecha: 2006
Publicado en: Journal of applied physics, 100, 043515
Tipo de documento: Artículo
Resumen: Multicomponent Fe65.5Cr4Mo4Ga4P12C5B5.5 amorphous alloy is known to have good soft magnetic properties combined with large glass-forming ability. Searching for a nanocrystalline structure that could improve its magnetic properties, Cr and Mo were partially substituted by Cu. The devitrification process of Cu-containing alloys shows an additional broad crystallization event that can be described by an Avrami law, with an exponent close to unity, typical for nanocrystallization phenomena. The microstructure of the nanocrystalline alloys consists of Fe Ga nanocrystals with a mean grain size of 5–10 nm embedded in an amorphous matrix. The maximum crystalline volume fraction achieved at the end of the nanocrystallization process was found to be of around 20% and for alloys with high Cu content a number of crystals of larger size 40 nm were observed. The combined use of x-ray diffraction and Mössbauer spectrometry allowed to estimate the compositions of both the nanocrystallin...
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Tamaño: 622.7Kb
Formato: PDF

URI: http://hdl.handle.net/11441/31409

DOI: http://dx.doi.org/10.1063/1.2234536

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