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.

*Work at the University of Missouri is supported by the Department of Energy, Basic Energy Sciences, Award DE-SC0019114.

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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