Magnetic and magnetoimpedance properties of Mn-doped FINEMET |
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Authors: | VS Kolat N Bayri ? Michalik T Izgi P Sovak FE Atalay H Gencer S Atalay |
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Institution: | 1. Department of Physics, University of Inonu, 44069 Malatya, Turkey;2. Department of Physics, P.J. Safarik University, Kosice, Slovakia |
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Abstract: | In this study, the effect of substituting Mn for Fe on the magnetic and magnetoimpedance (MI) properties of amorphous and nanocrystalline Fe73.5?xMnxCu1Nb3Si13.5B9 (x = 1, 3, 5, 7) alloys has been investigated. A higher Mn content causes a decrease in the saturation magnetization and Curie temperature. For as-received Fe73.5?xMnxCu1Nb3Si13.5B9 (x = 0, 1, 3, 5, 7) ribbons, the measured values of the MI are 11%, 12%, 16%, 12% and 15% for x = 0, 1, 3, 5, 7, respectively. The magnitude of the MI ratio increases in annealed samples, indicating that they are magnetically softened by nanocrystallisation. The change in MI is found to be ~70% for the x = 3 sample annealed at 550 °C. It is also found that replacing a small amount of Fe by Mn improves the magnetic softness of Fe73.5?xMnxCu1Nb3Si13.5B9 alloys. |
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