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中国物理学会期刊

非晶态FeZrB合金的电阻率与温度的关系

CSTR: 32037.14.aps.37.809

TEMPERATURE DEPENDENCE OF THE ELECTRICAL RESISTIVITY FOR AMORPHOUS FeZrB ALLOYS

CSTR: 32037.14.aps.37.809
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  • 本文研究了非晶态(Fe1-xZrx)84.5B15.5(x=0,0.02,0.04,0.06,0.08,0.1,0.15)和Fe90-xBxZr10(x=0,4,10,16,20)合金的电阻率ρ与温度T的关系。实验结果表明,当Zr含量在0.02≤x≤0.08时,ρ-T曲线出现两个线性斜率,在略高于居里温度Tc处出现转折,在T 

    The electrical resistivity of amorphous (Fe1-xZrx)84.5B15.5 (X=0, 0.02, 0.04, 0.06, 0.08, 0.1 and 0.15) and Fe90-xBxZr10 (X = 0, 4, 10, 16 and 20) alloys has been studied as a functiom of temperature in the range of 300 to ≈950 K. We find that, for the samples with X = 0.02 to X = 0.08, the curves of ρ(T)/ρ(300 K) vs T have two linear slopes and the turning point appears above curie temperature Tc. The temperature coefficients α1 of the electrical resistivity at Tc decrease with the increase of Zr content. Above 8 at% Zr, ρ(T)/ρ(300 K)-T curves of the all samples show negative temperature coefficients and a minimum near Tc. Finally, the composition dependence of the minimum temperature Tmin and the temperature coefficients α of resistivity are discussed in brief.

     

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