Asymmetric giant magnetoimpedance in stress-field annealed CoFeBSi amorphous ribbons

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F04%3A00011054" target="_blank" >RIV/61989100:27350/04:00011054 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Asymmetric giant magnetoimpedance in stress-field annealed CoFeBSi amorphous ribbons

Original language description

Amorphous Co66Fe4B15Si15 ribbons field annealed in air atmosphere are known to exhibit highly asymmetric GMI effect, also known as GMI valve [1]. The asymmetry originates from the exchange coupling of the soft magnetic amorphous material with a hard crystalline phase which develops on the ribbon surface during annealing.In this paper we investigate the influence of combination of magnetic field and stress during annealing on the asymmetric GMI. The magnetoimpedance is measured in the frequency range 0.1- 30 MHz. The fluxmeter and MOKE are used to investigate the bulk and surface hysteresis properties, respectively. The combined heat treatment produces hard ribbon axis anisotropy in the amorphous phase and easy axis anisotropy in the crystalline phase.Both anisotropies can be changed by the annealing conditions and by applied stress. Because of positive magnetostriction constant (lambda_s= 1.9 x 10^-7) easy ribbon axis anisotropy in the amorphous phase is obtained by applying tensile

Czech name

Asymetrická obrovská magnetoimpedance amorfních CoFeBSi pásků žíhaných v tlakovém poli

Czech description

Asymetrická obrovská magnetoimpedance amorfních CoFeBSi pásků žíhaných v tlakovém poli

Type

D - Article in proceedings

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GA202%2F03%2F0776" target="_blank" >GA202/03/0776: Magneto-optical effects in magnetic nanostructures</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2004

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Joint European Magnetic Symposia

ISBN

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ISSN

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e-ISSN

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Number of pages

1

Pages from-to

65

Publisher name

Institut of Theoretical and Applied Mechanics

Place of publication

Drážďany

Event location

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Event date

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Type of event by nationality

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UT code for WoS article

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