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Thermomagnetic studies of (Co0.93Fe0.07)75−x Cr x Si15B10 metglas

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Abstract

Thermomagnetization measurements have been carried out on the Co-Fe-Cr-Si-B metglas up to 7.5 at% Cr. For the Co70Fe5Si15Si10 metglas, application of magnetic field has been found to influence the process of crystallization. Thermal annealing of this alloy at temperaturesT c<T a<T cr leads to a decrease in the value ofT c due to chemical short-range ordering (CSRO) and topological short-range ordering (TSRO). Introduction of chromium into the above alloy reduces the saturation magnetization and Curie temperature of the alloy at the rate of 5.55 emu gm−1 and 41 K per at% Cr, respectively. These are explained due to the antiparallel coupling of the 3 d electrons of iron and cobalt atoms with those of chromium and to a deterioration in the strength of ferromagnetic exchange interactions between Co-Co, Co-Fe and Fe-Fe magnetic pairs.

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Authors and Affiliations

  1. Department of Nuclear Physics, University of Madras, A. C. College Campus, 600 025, Madras, India

    K. Ganesan, A. Narayanasamy & S. Ramasamy

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  1. K. Ganesan
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  2. A. Narayanasamy
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  3. S. Ramasamy
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Ganesan, K., Narayanasamy, A. & Ramasamy, S. Thermomagnetic studies of (Co0.93Fe0.07)75−x Cr x Si15B10 metglas. J Mater Sci: Mater Electron 1, 159–164 (1990). https://doi.org/10.1007/BF00694737

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