Asymmetric impedance in field-annealed Co-based amorphous wires and its bias field dependence

Autor:	A.E.P. de Araujo, Marcelo Knobel, J.G.S. Duque
Rok vydání:	2006
Předmět:	Exchange bias Materials science Condensed matter physics Annealing (metallurgy) Giant magnetoimpedance Biasing Giant magnetoresistance Condensed Matter Physics Joule heating Anisotropy Electronic Optical and Magnetic Materials Amorphous solid
Zdroj:	Journal of Magnetism and Magnetic Materials. 299:419-424
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2005.05.001
Popis:	Giant magnetoimpedance (GMI) was measured in Joule heated Co68.18Fe4.32Si12.5B15 amorphous wires. Samples heat treated in open air showed an asymmetric giant magnetoimpedance (AGMI) behaviour. The AGMI profile, measured at selected frequency values and bias circumferential fields, can be related to the exchange bias interaction between the soft magnetic amorphous material and a harder magnetic crystalline phase formed on the surface of the wire. The present data show that AGMI behaviour take place owing to a soft magnetic layer with unidirectional anisotropy that develops in the surface of the wire.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::884470f55588c154f37537de1bead6c8 https://doi.org/10.1016/j.jmmm.2005.05.001 Zobrazit plný text záznamu Full Text from ScienceDirect