TEMPERATURE DEPENDENCE OF ANTIFERRO-MAGNETIC γ-Fe-Mn-Al AND γ-Fe-Mn-Cr ALLOYS UPON RESISTIVITY

Acta Metall Sin

1986, Vol. 22

Issue (6): 22-28 DOI:

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TEMPERATURE DEPENDENCE OF ANTIFERRO-MAGNETIC γ-Fe-Mn-Al AND γ-Fe-Mn-Cr ALLOYS UPON RESISTIVITY

by ZHANG yantsheng (Institute of Metal Research; Academia Sinica; Shenyang)

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by ZHANG yantsheng (Institute of Metal Research; Academia Sinica; Shenyang). TEMPERATURE DEPENDENCE OF ANTIFERRO-MAGNETIC γ-Fe-Mn-Al AND γ-Fe-Mn-Cr ALLOYS UPON RESISTIVITY. Acta Metall Sin, 1986, 22(6): 22-28.

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Abstract Measurement was carried out of the temperature dependence of the antiferromagnetic fcc Fe-Mn-Al and Fe-Mn-Cr alloys upon the electrical resistivity and magnetic susceptibility. A paramagnetic-antiferromagnetic transition together with an anomaly of resistivity of them is obtained. Owing to antiferromagnetism, ordered scattering,the anomaly of resistivity increases the dρ/dT decreases even becomes a negative divergence and the ρ-T plot turns upward at temperature below T_N. The anomalous resistivity increases with the decrease of T_N and the raise of the peak value on susceptibility. The amount of Al addition is vigorously influenced on the variation of magnetic resistivity induced by the antiferromagnetic transition. The more Al they contain, the more sharp increment it is. But the effect of Cr on the resistivity is far inferior to that of Al. As the resuit of the paramag netic-antiferromagnetic transition, it would be believed in the possibility of developing a new Fe-Mn-Al-Cr resistance alloy with low temperature coefficient.

Received: 18 June 1986

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1986/V22/I6/22

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