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| RESISTIVITY ANOMALY IN METALLIC GLASSES(Fe_(1-x)Co_x)_(78)Si_(9.5)B_(12.5) |
| GUO Huiqun; SHEN Baogen; ZHAN Wenshan; PAN Xiaoshuo(Institute of Physics; Academia Sinica; Beijing) |
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Cite this article:
GUO Huiqun; SHEN Baogen; ZHAN Wenshan; PAN Xiaoshuo(Institute of Physics; Academia Sinica; Beijing). RESISTIVITY ANOMALY IN METALLIC GLASSES(Fe_(1-x)Co_x)_(78)Si_(9.5)B_(12.5). Acta Metall Sin, 1983, 19(1): 53-58.
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Abstract The electrical resistivity measurements of the amorphous (Fe_(1-x)Co_x)_(78)Si_(9.5)B_(12.5)(x=0—1.0) alloys were made by a fourprobe technique at temperature range from 4.2 to 300K. It was found that the resistivity minima have been observed over the whole concentration range for x=0—1.0. The temperature T_(min) at which the resistivity is minimum increased with increaing Co content, and approached to the maximum at x=0.9. Below T_(min) the resistivity can be described by a logarithmic temperature dependence over the whole content. In the temperature range between T_(min) and 100K the resistivity has a T~2 temperature dependence and follows T_(3/2) temperature dependence above 100K. In summary, the temperature dependence of the electrical resistivity for all content may be expressed at temperature range (9.5—100K) by ρ/ρ_(min)=ρ_0+AlnT+BT~2. A Kondo-type resistivity minimum has been observed in these alloys, A T~2 temperature dependence of resistivity may originate from electron-phonon scattering.
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Received: 18 January 1983
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