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Effect of dc-Joule-heating thermal processing on magnetoimpedance of Fe72Al5Ga2P11C6B4 amorphous alloy |
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| Authors: | N.S. Mitrović S.N. Kane P.V. Tyagi S. Roth |
| Affiliation: | 1. Technical Faculty ?a?ak, Svetog Save 65, 32000 ?a?ak, Serbia;2. School of Physics, D.A. University, Khandwa Road Campus, Indore 452017, India;3. Center for Energy Studies, Indian Institute of Technology, New Delhi 110016, India;4. IFW Dresden, Institute for Metallic Materials, Helmholtz Str. 20, D-01069 Dresden, Germany |
| Abstract: | The effect of multistep dc-Joule-heating thermal processing on magnetoimpedance (MI) of Fe72Al5Ga2P11C6B4 ribbons is presented. After material optimization significant increase of MI response up to value ΔZ/Z≈55% as well as sensitivity of about 6%/kA/m (for H?3–4 kA/m), were recorded in still amorphous samples at driving frequencies 2–3 MHz. On-line and post-annealing electrical resistivity together with Mössbauer spectra analysis and frequency dependence of the penetration depth were used for characterization of MI improvement. |
| Keywords: | 71.55.Jv 75.50.Bb 75.47.&minus m 76.80.+y |
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