Abstract
This letter reports the giant magnetoimpedance (GMI) effect and its magnetic response in optimized Co70Fe5Si15Nb2.2Cu0.8B7 amorphous and Fe71Al2Si14B8.5Cu1Nb3.5 nanocrystalline ribbons. At a given frequency of 5 MHz, the largest GMI ratios of 513% and 640% were observed for the Co-based amorphous and Fe-based nanocrystalline samples, respectively. More interestingly, the magnetic response reached the largest value of 144%/Oe at the frequency of 4 MHz for the Co-based amorphous sample and of 40%/Oe at the frequency of 5 MHz for the Fe-based nanocrystalline sample. This is ideal for high-frequency and high-performance GMI-based sensor applications. The skin effect model was used to interpret the obtained results of GMI in connection with the magnetic-field and frequency dependences of the longitudinal permeability.
Translated title of the contribution | Optimized giant magnetoimpedance effect in amorphous and nanocrystalline materials |
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Original language | English |
Pages (from-to) | 08C505-1 - 08C505-3 |
Number of pages | 3 |
Journal | Journal of Applied Physics |
Volume | 99 |
DOIs | |
Publication status | Published - Apr 2006 |
Bibliographical note
Publisher: American Institute of PhysicsOther identifier: 08C505