Fe-based nanocomposite alloys Magnetoimpedance Magnetic sensors
Issue Date:
2006
Publisher:
Proceedings of SPIE - The International Society for Optical Engineering
Citation:
Volume: 6170
Abstract:
Influence of Mn partial substitution for Fe on the magnetic and magnetoimpedance properties of
Fe73.5-xMnxSi 13.5B9Nb3Cu1 (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-xMn xSi13.5B9Nb3Cu1 (x = 1, 3, and 5) nanocomposites are potential candidate
materials for making GMI sensors.
