Influence of s-f exchange interaction on electrical conduction in rare-earth dialuminides |
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| Affiliation: | 1. Jiangsu Laboratory of Advanced Functional Materials, Department of Physics, Changshu Institute of Technology, Changshu, 215500, China;2. Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, 210094, China;1. Institute for Frontier Materials, Deakin University, Burwood, VIC, Australia;2. Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, Copenhagen, Denmark;3. European Spallation Source, Lund, Sweden;1. Center for Materials Science and Engineering, Guangxi University of Science and Technology, LiuZhou 545006, China;2. Laboratory of Dielectric Functional Materials, School of Physics and Material Science, Anhui University, Hefei 230039, China |
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| Abstract: | The electrical resistivity has been measured between 4.2 and 300°K for RA12 compounds, where R denotes the rare-earth elements La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er, Yb and Y. From an analysis of the resistivity behaviour of the ferromagnetic compounds values are deduced for the effective s-f exchange coupling constants. These values agree reasonably well with data given in literature for the Knight shift of the A1 nuclear magnetic resonance. For CeA12 a resistivity minimum has been observed at 13°K. |
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