Why is the Curie temperature of Co2FeSi so high?

ORAL

Abstract

We have investigated the Curie temperature of Co2FeSi and Co2TiSi by using first principle calculations. The full heusler alloy Co2FeSi has large magnetic moment per f.u. 6μB and very high Curie temperature ~1100K. And the value for Tc is 380K for half-metallic ferromagnetism Co2TiSi. We Compare these two systems using models and calculations of magnon dispersions.

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Presenters

  • Guanhua Qin

    University of missouri

Authors

  • Guanhua Qin

    University of missouri

  • Wei Ren

    Department of Physics, Shanghai University, Shanghai University, Physics Department, Shanghai University

  • David Singh

    University of Missouri, Physics, University of Missouri, University of Missouri-Columbia, University of missouri, Department of Physics and Astronomy, University of Missouri