Residual quenching stresses in glass-coated amorphous ferromagnetic microwires

• Published in: Journal of physics. D, Applied physics Applied physics, 2000-05, Vol.33 (10), p.1161-1168
• Main Authors: Antonov, A S, Borisov, V T, Borisov, O V, Prokoshin, A F, Usov, N A
• Format: Article
• Language: English
• ISSN: 0022-3727; 1361-6463
• DOI: 10.1088/0022-3727/33/10/305

Glass-coated amorphous ferromagnetic microwires are now attracting growing interest due to their promising technological applications. The wires consist of an amorphous metallic core covered by an insulating glass shell, the thickness of both core and shell being within the range of micrometers. The calculation of the residual stress tensor components in glass-coated amorphous ferromagnetic microwire is carried out on the basis of the theory of viscoelasticity. The approach takes into account the relaxation of the stresses both in a metallic core and a glass shell of the wire within a certain temperature interval near the point of the wire's vitrification. the distribution of the residual stresses is investigated as function of mechanical characteristics of metallic core and glass shell at different ratios of the metallic core radius to the total wire radius. The magnetic behavior of a glass-coated amorphous microwire with small negative magnetostriction is analysed and is shown to be consistent with the experimental data. (Core: cobalt alloy.)