电阻率和电导率
凝聚态物理
反铁磁性
铁磁性
材料科学
平面(几何)
垂直的
散射
六方晶系
大气温度范围
费米面
基面
自旋(空气动力学)
物理
几何学
超导电性
化学
结晶学
光学
气象学
热力学
量子力学
数学
作者
Bengt Stenström,Lorna J. Sundström,V. Sagredo
出处
期刊:Physica Scripta
[IOP Publishing]
日期:1972-10-01
卷期号:6 (4): 209-213
被引量:6
标识
DOI:10.1088/0031-8949/6/4/007
摘要
Electrical resistivity measurements have been carried out on hexagonal FeGe (B 35), which is a uniaxial antiferromagnet with TN=411 K. The resistivity parallel to the c-axis exhibits a hump below TN, which arises from the magnetic superzones cutting and distorting different contributions to the Fermi surface. For the current in the basal plane a mere change in slope is observed in the resistivity at the Néel temperature. Critical scattering, as well as imperfections, tend to smooth out the transition behaviour and an attempt is made to determine the critical exponent in dϱ/dT = Cε-λ, where ε = |T-TN|/TN. For current parallel to the c-axis λ ≈ 0.8 for T>TN and λ ≈ -0.4 for T
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