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Magnetoelastic anisotropy distribution in glass-coated microwires

Published online by Cambridge University Press:  31 January 2011

J. Velázquez ,
M. Vázquez  and
A. P. Zhukov
J. Velázquez
Affiliation:
Instituto de Magnetismo Aplicado, RENFE-UCM, and Instituto de Ciencia de Materiales, CSIC, P.O. Box 155, 28230 Las Rozas, Madrid, Spain
M. Vázquez
Affiliation:
Instituto de Magnetismo Aplicado, RENFE-UCM, and Instituto de Ciencia de Materiales, CSIC, P.O. Box 155, 28230 Las Rozas, Madrid, Spain
A. P. Zhukov
Affiliation:
Instituto de Magnetismo Aplicado, RENFE-UCM, and Instituto de Ciencia de Materiales, CSIC, P.O. Box 155, 28230 Las Rozas, Madrid, Spain
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Abstract

Amorphous microwires, obtained by the glass-coated melt-spinning method having diameters in the range of micrometers, can exhibit perfectly square (single and large Barkhausen jump) or quasi-anhysteretic hysteresis loops, depending on the easy magnetization direction determined by the intrinsic magnetoelastic anisotropy. The thermoelastic internal stressed frozen-in during the fabrication that model the domain structure are here calculated by considering the classical theory of elasticity. A complex stress distribution is obtained having magnitude of 103 MPa. Circular stresses turn out to be predominant, which arises from the composite nature of the microwire (metallic nucleus and insulating glass coating having different mechanical and thermal properties).

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 10 , October 1996 , pp. 2499 - 2505
Copyright
Copyright © Materials Research Society 1996

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