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The influence of a varying metal-to-glass ratio on the GMI effect in amorphous glass-coated Co70.3Fe3.7B10Si13Cr3 microwires has been investigated. In the range of frequencies investigated (1-10 MHz), the magnitude of the GMI effect increases as the metal-to-glass ratio (h) increases from 4.11 to 9.29. The GMI curves for the h = 4.11 microwire exhibit a single-peak feature for f 1 MHz, whereas a consistent double-peak feature is observed for microwires with h = 8.07, 8.72, and 9.29. The largest GMI effect is achieved for microwires with h = 9.29. The anisotropy field (H-k), determined from GMI curves, increases with h = 4.11 to h = 8.07 and decreases when It > 8.07. The calculated radial stress decreases as h increases from 4.11 to 9.29. These results provide further insights into the correlation between the GMI effect and microwire dimensions towards the GMI optimization of amorphous glass-coated magnetic microwires for sensor applications. (C) 2009 Elsevier Ltd. All rights reserved.
|Number of pages||4|
|Journal||Solid State Communications|
|Publication status||Published - Jan 2010|
- Magnetic sensors
- GIANT MAGNETOIMPEDANCE
- Giant magnetoimpedance
- Glass-coated microwires
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MAGNETIC MICROWIRE AS AN ALTERNATIVE TO OPTICAL FIBRES FOR SELF-MONITORING COMPOSITES
1/08/08 → 1/08/09