Archivio Istituzionale della RicercaIn this work, the magnetoimpedance relaxation in Co(68.25)Fe(4.5)Si(12.25)B(15) systems has been measured in the frequency interval 500 kHz-3 GHz. A comparison between ribbons, amorphous and glass-covered wires of nominal composition Co(68.25)Fe(4.5)Si(12.25)B(15) was made. The time variation of the calculated characteristic impedance after field removal displays a similar behavior to the classic magnetic permeability aftereffect measured at lower frequencies by means of conventional fluxmetric techniques. Thermal treatments are shown to affect the impedance relaxations in melt-spun alloys. Conversely, no substantial effect has been observed in glass-covered wires. (C) 2002 Elsevier Science B.V. All rights reserved.
High-frequency magnetic aftereffect in Co-based amorphous wires and ribbons / Allia, PAOLO MARIA EUGENIO ICILIO; M., Coisson; P., Tiberto; F., Vinai; H., Chiriac. - In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - ISSN 0304-8853. - 254:(2003), pp. 207-209. [10.1016/S0304-8853(02)00764-3]
High-frequency magnetic aftereffect in Co-based amorphous wires and ribbons
ALLIA, PAOLO MARIA EUGENIO ICILIO;
2003
Abstract
In this work, the magnetoimpedance relaxation in Co(68.25)Fe(4.5)Si(12.25)B(15) systems has been measured in the frequency interval 500 kHz-3 GHz. A comparison between ribbons, amorphous and glass-covered wires of nominal composition Co(68.25)Fe(4.5)Si(12.25)B(15) was made. The time variation of the calculated characteristic impedance after field removal displays a similar behavior to the classic magnetic permeability aftereffect measured at lower frequencies by means of conventional fluxmetric techniques. Thermal treatments are shown to affect the impedance relaxations in melt-spun alloys. Conversely, no substantial effect has been observed in glass-covered wires. (C) 2002 Elsevier Science B.V. All rights reserved.
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https://hdl.handle.net/11583/2498072
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