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Resistivity anomalies for ferromagnetic metals at Curie points

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We have investigated the resistivity anomalies of ferromagnetic metals near the Curie temperature T c using the itinerant model of magnetic electrons Current theory describing these anomalies is based on the localized model of magnetic electrons in ferromagnetic metals. We use the itinerant model to treat the spin correlation function. Using the second quantization techniques of field theory, the correlation function is found. Thence, the scattering cross section is obtained. The relaxation time and the resistivity are calculated for both the paramagnetic and the ferromagnetic regions. The temperature derivatives of the resistivity are then derived for temperatures approaching the Curie temperature from both below and above. Our results are positive infinite for T approaching T c from below and negative infinite for T approaching T c from above.

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Authors and Affiliations

  1. Department of Physics, State University of New York at Binghamton, Binghamton, New York

    Der-Ruenn Su

  2. Department of Physics, National Taiwan University, Taipei, China

    Der-Ruenn Su

  3. Department of Physics, State University of New York at Binghamton, Binghamton, New York

    T. M. Wu

Authors
  1. Der-Ruenn Su
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  2. T. M. Wu
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Su, DR., Wu, T.M. Resistivity anomalies for ferromagnetic metals at Curie points. J Low Temp Phys 19, 481–491 (1975). https://doi.org/10.1007/BF00114094

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  • DOI: https://doi.org/10.1007/BF00114094

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