The effect of surface crystalline layers on asymmetric off-diagonal magnetoimpedance in field-annealed CoFeSiB amorphous ribbons |
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Authors: | Seok-Soo Yoon NA Buznikov Lan Jin Chong-Oh Kim CheolGi Kim |
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Institution: | 1. Department of Physics, Andong National University, Andong 760-749, Republic of Korea;2. Research Center for Advanced Magnetic Materials, Chungnam National University, Daejeon 305-764, Republic of Korea |
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Abstract: | The off-diagonal magnetoimpedance in field-annealed CoFeSiB amorphous ribbons was measured using a pick-up coil wound around the sample. One side of a ribbon was etched in hydrofluoric acid solution during various times in order to change the thickness of the surface crystalline layer appearing after annealing. The asymmetric two-peak field dependence of the off-diagonal impedance was observed for all samples. The evolution of the off-diagonal magnetoimpedance with the change in the ribbon thickness is analyzed. |
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Keywords: | 72 15 Gd 75 50 Kj 75 60 Ej 75 60 Nt |
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