Abstract
In this study, resonance enhancement of giant magneto-impedance (GMI) effect in Fe-based Fe"7"3". "5Cu"1Nb"3Si"1"3"."5B"9 glass-coated microwires was investigated. A new method was adopted by sputtering a copper layer in the outside of the Fe-based glass-coated wire. A capacitance forms between the ferromagnetic core and outer copper layer, where the glass insulator works as a dielectric layer. Therefore, the composite wire forms an LC resonance circuit (which consists of an inductor, represented by the letter L, and a capacitor, presented by the letter C) itself, resulting in an increase of GMI ratio from 250% to 330%. Meanwhile, the influence of resonance frequency on the GMI effect was discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 87-90 |
| Number of pages | 4 |
| Journal | Surface Review and Letters |
| Volume | 15 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - 2008 |
Keywords
- Giant magneto-impedance effect
- LC resonance
- resonance frequency