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Physical properties of nearly zero magnetostriction Co-rich glass-coated amorphous microwires

Published online by Cambridge University Press:  31 January 2011

A. F. Cobeño ,
A. Zhukov ,
A. R. de Arellano-López ,
F. Elías ,
J. M. Blanco ,
V. Larin  and
J. González
A. F. Cobeño
Affiliation:
Dept. de Electrónica y Telecomunicaciones y Dept. de Física Aplicada I, Escuela Universitaria de Ingeniería Técnica Industrial, 20011, San Sebastián, Spain
A. Zhukov
Affiliation:
Dept. de Física de Materiales, Faculdad de Química, P.O. Box 1072, 20080, San Sebastián, Spain, and AmoTec LTD, Blvd. Dacia 15/78, Kishinev, Moldova
A. R. de Arellano-López
Affiliation:
Dept. de Física de Materiales, Faculdad de Química, P.O. Box 1072, 20080, San Sebastián, Spain, and AmoTec LTD, Blvd. Dacia 15/78, Kishinev, Moldova
F. Elías
Affiliation:
Dept. de Física de la Materia Condensada, Universidad de Sevilla, P.O. Box 1065, 41080 Sevilla, Spain
J. M. Blanco
Affiliation:
Dept. de Electrónica y Telecomunicaciones y Dept. de Física Aplicada I, Escuela Universitaria de Ingeniería Técnica Industrial, 20011, San Sebastián, Spain
V. Larin
Affiliation:
AmoTec LTD, Blvd. Dacia 15/78, Kishinev, Moldova
J. González
Affiliation:
Dept. de Física de Materiales, Faculdad de Química, P.O. Box 1072, 20080, San Sebastián, Spain
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Abstract

Magnetic and mechanical properties of Co-rich amorphous microwires of nominal compositions (Co1–xMnx)75Si10 B15 (0.08 < x < 0.11) and Co56.5Fe6.5Ni10B16Si11 with nearly zero magnetostriction constant have been studied. Drastic changes of the hysteresis loop with the decrease of x from rectangular to flat shape were observed at x < 0.1, while the Co56.5Fe6.5Ni10B16Si11 microwire showed rectangular hysteresis loops. Compositions with x ≥ 0.1 have small but positive magnetostriction constant while negative λs values have been observed at x ≤ 4 0.09, indicating rectangular character of the hysteresis loop in samples with nearly zero and even for small negative λs. External stress dependence of switching field, H*, showed an increase of H*; with s for samples with x = 0.11 and a decrease of H* with σ for x = 0.1. Besides, microwires of the same composition but with different dimensions showed different H*(σ) dependencies.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 9 , September 1999 , pp. 3775 - 3783
Copyright
Copyright © Materials Research Society 1999

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