Crystal growth, magnetic and transport properties of single-crystal YbCuGe
Crystal growth, magnetic and transport properties of single-crystal YbCuGe
复制标题
YbCuGe单晶的晶体生长、磁性和输运特性
DOI：
10.1016/j.jallcom.2011.12.147
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
et al
中科院分区：
文献类型：
--
作者：
K.Katoh;et al
研究了YbCuGe单晶的磁性和输运性质。磁化率在所有温度范围内均沿c轴呈单轴各向异性，在4.2K左右出现扭结。比热在4.2K处出现λ型峰值，在90kOe的磁场作用下，比热向低温侧移动。根据零场数据估计线性比热系数为5.2mJ/ molk2。电流沿主轴的电阻率在200K左右表现出金属特性，并有较大的最大值。霍尔系数从70K时的负最小值急剧变化到10K以下的正恒定值。这些结果表明YbCuGe是一种TN=4.2K的金属反铁磁体。
The magnetic and transport properties of single-crystal of YbCuGe are presented. The magnetic susceptibility which shows uniaxial anisotropic behavior along the c-axis in all temperature range has a kink at around 4.2K. The specific heat also shows a λ-type peak at 4.2K, which moves toward low temperature side by an application of the magnetic field up to 90kOe. The linear specific heat coefficient is estimated to be 5.2mJ/molK2from the zero field data. The electrical resistivity for the current along the principal axes shows a metallic behavior with a broad maximum at around 200K. The Hall coefficient drastically changes from the negative minimum at 70K to the positive constant value below 10K. These results indicate that YbCuGe is a metallic antiferromagnet with TN=4.2K.