Magnetotransport Properties of Thin C-Fe Films

ORAL

Abstract

The magnetotransport properties of C-Fe films formed by e-beam vapor deposition onto glass substrates are presented in the temperature region of 2 K to 300 K. Hall effect measurements exhibit a significant anomalous Hall voltage whose magnitude increases with increasing temperature. Measurements of the ordinary Hall coefficient in 10 nm-thick films give a charge carrier density ranging from n $\sim $ 3.0 x 10$^{29}$ m$^{-3}$ at 2 K to approximately half that value at 290 K. A comparison between anomalous Hall effect and parallel field magneto-optic Kerr effect measurements reveal a highly anisotropic coercive field with the easy direction lying in the plane of the film. The films have an isotropic linear positive magnetoresistance (LPMR) beyond their saturation magnetization.

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Authors

  • Joseph Prestigiacomo

    Louisiana State University Department of Physics and Astronomy

  • Kathie Lusker

    Louisiana State University Department of Chemistry

  • Yimin Xiong

    Department of Physics and Astronomy, Louisiana State University, Louisiana State University, Louisiana State University Department of Physics and Astronomy

  • Shane Stadler

    Louisiana State University Department of Physics and Astronomy

  • Amar Karki

    Louisiana State University, Louisiana State University Department of Physics and Astronomy

  • David Young

    Louisiana State University Department of Physics and Astronomy

  • Jayne Garno

    ouisiana State University Department of Chemistry

  • Philip Adams

    Louisiana State University Department of Physics and Astronomy