Magnetism of the Kondo compound CeAuAl
Magnetism of the Kondo compound CeAuAl
复制标题
近藤化合物 CeAuAl 的磁性
DOI：
10.1088/0953-8984/9/22/024
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
S. Malik
中科院分区：
文献类型：
--
作者：
D. Adroja;B. Rainford;L. Menon;S. Malik
通过中子散射、磁阻、输运和磁性测量研究了近藤晶格化合物 CeAuAl 的磁性。 1.5 K 的中子衍射揭示了调制的反铁磁结构。非弹性中子散射光谱显示在 24.2 meV 和 45.8 meV 处有两个明确的晶体场激发。通过中子谱和磁化率数据的分析估计了晶体场参数。通过将低温负磁阻与近藤杂质的施洛特曼标度形式进行比较，对近藤温度进行了估计。基于费歇尔理论对热电功率数据进行了分析，该理论考虑了近藤效应和晶体场效应。
The magnetism of the Kondo lattice compound CeAuAl has been investigated through neutron scattering, magnetoresistance, transport and magnetic measurements. Neutron diffraction at 1.5 K revealed a modulated antiferromagnetic structure. Inelastic neutron scattering spectra showed two well defined crystal-field excitations at 24.2 meV and 45.8 meV. The crystal-field parameters have been estimated from an analysis of the neutron spectra and susceptibility data. An estimate of the Kondo temperature has been made by comparison of the low-temperature negative magnetoresistance with Schlottmann's scaling form for the Kondo impurity. An analysis of thermoelectric power data has been made on the basis of Fischer's theory, which allows Kondo and crystal-field effects to be taken into account.