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2008 | 114 | 1 | 229-233
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Spin Correlations Effect on the Electrical Resistivity in Rare Earth Intermetallics

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The magnetic resistance anomaly in the paramagnetic phase of ordered cubic rare earths systems is considered. Within simple model of the free electrons scattering on the localized moments of magnetic ions system in the Born approximation it is shown that the negative temperature coefficient of the resistivity can be attributed to the spin correlations. The condition for the anomaly is formulated, which generalizes the ones known for the crystal field-free systems in the critical region. The conclusions are illustrated by the results of the resistivity calculations for DyAg and their comparison with the experimental data.
  • Institute for Low Temperature and Structure Research, Polish Academy of Sciences, PN 1410, 50-950 Wrocław 2, Poland
  • Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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