金属学报  1986, Vol. 22 Issue (4): 63-66

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CuNi合金电阻极小值理论

杨振凡;刘福绥

武汉大学物理系;北京大学物理系

ELECTRICAL RESISTANCE MINIMA THEORY OF CuNi ALLOY

by YANG Zhenfan (Department of Physics; Wuhan University); LIU Fusui (Department of Physics; Peking University)

杨振凡;刘福绥. CuNi合金电阻极小值理论[J]. 金属学报, 1986, 22(4): 63-66.
, . ELECTRICAL RESISTANCE MINIMA THEORY OF CuNi ALLOY[J]. Acta Metall Sin, 1986, 22(4): 63-66.

摘要 参考文献 相关文章 Metrics 全文: PDF(266 KB)   摘要: <正> 在稀磁合金中发现低温下电阻率的Kondo效应以后,一个非常引人注目的现象是含30—42at.-％Ni的Cu合金中,也存在电阻率低温反常,实验结果为图1中圆圈所示(最近在AuNi合金中也观测到相同的现象)。这个电阻异常的特点是极小值的宽度和出现极小值的温度,都随Ni含量的增加明显地加大。这个现象普遍认为是磁性集团效应引起的,不是单个Ni原子引起的。但是,至今尚无一个理论对此现象作出定量的解释。本文应用无序自旋集团模型导出一个电阻率公式,对此现象作了定量的解释。 Abstract：The electrical resistivity of paramagnetic CuNi alloys in composition range between 30 and 42 at.-% Ni due to spinflip scattering of conduction electrons from individual and coupled spin-clusters was studied by using the disordered spin-cluster model Together with the ρ_L(T) phonon contribution, the total resistivity can be written as: ρ=ρ_L(T)+ρ_0(0)-nρ_1lgT+A n~2/T The resistance minima that was observed in the experiments was explained by using the results. 收稿日期: 1986-04-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 杨振凡 刘福绥 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I4/63 1 Kondo, J., Progr. Theoret. Phys., (Kyoto), 32 (1964) , 37． 2 Houghton, R.W.; Sarachik, M.P.; Kouvel, J.S., Solid State Commun., 8 (1970) , 943． 3 Yu Mei; Tyler E.H.; Luo, H.L., Phys. Rev., B26 (1982) , 4299． 4 Eno, H.F.; Tyler, E.H.; Luo, H.L.,J. Low Temp. Phys., 28 (1977) , 443． 5 Levin, K.; Mills, D., Phys. Rev., B9 (1974) , 2354． 6 Liu, Fu-sui; Ruvalds, J., Physics, 107B (1981) , 623 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed