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Proceedings Paper

Enhanced GMI effect in Fe73.5-xMnxSi13.5B9Nb3Cu1 (x=1,3,5) nanocomposites due to Mn substitution for Fe
Author(s): Manh-Huong Phan; Hua-Xin Peng; Seong-Cho Yu; Nguyen Duc Tho; Nguyen Chau
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Paper Abstract

Influence of Mn partial substitution for Fe on the magnetic and magnetoimpedance properties of Fe73.5-xMnxSi13.5B9Nb3Cu1 (x = 1, 3, and 5) nanocomposite ribbons were investigated. The results indicated that the Mn addition led to an improved exchange coupling between grains and hence in the magnetic softness. Consequently, the giant magnetoimpedance (GMI) effect was significantly enhanced in these nanocomposites. In the frequency range of 0.1-10 Mhz, the GMI ratio reached the highest values of 83%, 94%, and 130% at the frequency of 2 MHz for x = 1, 3, and 5 compositions, respectively. The corresponding field sensitivity of GMI reached the highest values of 6, 7, and 16 %/Oe, respectively. These indicate that Fe73.5-xMnxSi13.5B9Nb3Cu1 (x = 1, 3, and 5) nanocomposites are potential candidate materials for making GMI sensors.

Paper Details

Date Published: 6 April 2006
PDF: 8 pages
Proc. SPIE 6170, Smart Structures and Materials 2006: Active Materials: Behavior and Mechanics, 61700Q (6 April 2006); doi: 10.1117/12.657566
Show Author Affiliations
Manh-Huong Phan, Bristol Univ. (United Kingdom)
Hua-Xin Peng, Bristol Univ. (United Kingdom)
Seong-Cho Yu, Chungbuk National Univ. (South Korea)
Nguyen Duc Tho, National Univ. of Hanoi (Vietnam)
Nguyen Chau, National Univ. of Hanoi (Vietnam)

Published in SPIE Proceedings Vol. 6170:
Smart Structures and Materials 2006: Active Materials: Behavior and Mechanics
William D. Armstrong, Editor(s)

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