作者:E Gratz、R Resel、A T Burkov、E Bauer、A S Markosyan、A Galatanu
DOI:10.1088/0953-8984/7/33/008
日期:1995.8.14
The transport properties of intermetallic compounds RCo2 (R=Pr, Nd, Sm, Gd-Lu, Sc and Y) in the temperature range from 4.2 up to 1000 K were studied and different contributions were determined. In the non-magnetic compounds the spin fluctuation contribution to the electrical resistivity, rho sf varies as (T/Tsf)2, and thermal resistivity, Wsf varies as (T/Tsf), were found to follow the theoretical
研究了金属间化合物 RCo2(R = Pr、Nd、Sm、Gd-Lu、Sc 和 Y)在 4.2 至 1000 K 的温度范围内的传输特性,并确定了不同的贡献。在非磁性化合物中,自旋波动对电阻率的贡献,rho sf 随 (T / Tsf) 2 变化,而热阻率 Wsf 随 (T / Tsf) 变化,符合理论预测。推导了由传导电子在 4f 矩上散射引起的自旋无序贡献,并发现它与 de Gennes 因子成正比。结果表明,自旋涨落是温度相关热电势低温特性的原因,而高温行为主要由状态密度函数决定。在居里温度附近的顺磁区,