Resistivity of SomeCuAuFeAlloys
Resistivity of SomeCuAuFeAlloys
复制标题
某些 CuAuFe 合金的电阻率
DOI：
10.1103/physrevb.2.857
复制
发表时间：
1970
影响因子：
3.7
通讯作者：
P. Ford
中科院分区：
文献类型：
--
作者：
J. Loram;T. Whall;P. Ford
The electrical resistivity of a series of CuAu Fe alloys, containing 0, 5, 10, and 100 at.% Au, has been measured over the temperature range 0.5-300 K, and the results are compared with recent theoretical predictions of the resistance anomaly associated with the formation of the spin-compensated state. From such a comparison, the Kondo temperature T K is found to decrease rapidly with increasing Au concentration from 24 K in Cu Fe to 0.24 K in Au Fe. Although a dependence of the form A− B (T T K) 2 ln (T T K) 2 is found to fit the results of the CuAu Fe alloys over a wide range of temperatures, this does not describe the Cu Fe results in the low-temperature limit, where a parabolic dependence C− D (T T K) 2 is observed for T T K< 0.06. An expression of the form E− F 1+ S (S+ 1) π 2 [ln (T T K)] 2− 1 2 describes the Au results and those of the CuAu Fe alloys at T> T K with the spin S= 0.77±0.25 if suitable corrections are made for deviations from Matthiessen's rule in the temperature region where phonon scattering is significant.
