Repositório Digital

A- A A+

Magnetization dynamics as derived from magneto impedance measurements

.

Magnetization dynamics as derived from magneto impedance measurements

Mostrar registro completo

Estatísticas

Título Magnetization dynamics as derived from magneto impedance measurements
Autor Carara, Marcos Andre
Baibich, Mario Norberto
Sommer, Rubem Luis
Abstract In this work, the magnetization dynamics of soft magnetic materials is studied with the aid of transverse differential permeability μ(Iac , f ,Hdc) spectra. Contributions to the magnetization processes from domain wall motion and rotation of the magnetization can be extracted from the transverse differential permeability data which are in turn obtained from impedance Z(Iac , f ,Hdc) spectra. In particular, an iteration method is used to extract μ(Iac , f ,Hdc) from Z(Iac , f ,Hdc) data. The approach is tested in samples with a very well known domain structure, namely (110)[[001]FeSi3%. Permeability spectra μ(Iac , f ,Hdc) were obtained in the frequency range (100 Hz<f<=100 <=kHz), probe current range (0.1<Iac<50 mA) and dc magnetizing field range (0<=Hdc<=500 Oe). It is shown that the method developed in this article can be efficiently used to identify and study different dynamic processes driven by the probe current and controlled by the external dc field. In particular, it is shown that the method provides the tools to separate the reversible and irreversible parts of these processes.
Contido em Journal of applied physics. Melville. Vol. 88, no. 1 (July 2000), p. 331-335
Assunto Efeitos galvanomagneticos
Ligas de ferro
Ligas de silicio
Magnetizacao
Magnetoimpedancia
Materiais ferromagneticos
Materiais magneticos
Metodos iterativos
Paredes de dominio
Permeabilidade magnética
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/95426
Arquivos Descrição Formato
000274876.pdf (233.6Kb) Texto completo (inglês) Adobe PDF Visualizar/abrir

Este item está licenciado na Creative Commons License

Este item aparece na(s) seguinte(s) coleção(ões)


Mostrar registro completo

Percorrer



  • O autor é titular dos direitos autorais dos documentos disponíveis neste repositório e é vedada, nos termos da lei, a comercialização de qualquer espécie sem sua autorização prévia.
    Projeto gráfico elaborado pelo Caixola - Clube de Criação Fabico/UFRGS Powered by DSpace software, Version 1.8.1.