Robust half-metallicity of AlCoN and AlNiN

Academic Article

Abstract

  • Theoretical investigations of Al 1-xCo xN and Al 1-xNi xN (x = 0.25) in the zinc blende phase are presented. The robustness of half metallicity of these compounds with correlation to their lattice compressions is discussed. The results show that both compounds retain their half-metallic nature (conductor for spin up state and semiconductor for spin down state) with their lattice compressions up to certain critical lattice constants. Abrupt changes in the electronic and magnetic properties are observed at these robust transition lattice constants (RTLCs). These compounds lose their integer magnetic moments of 4μ β for Al 1-xCo xN and 3 μ β for Al 1-xNi xN at RTLCs. The calculated RTLC for Al 0.75Co 0.25N is 4.4 Å and for Al 0.75Ni 0.25N is 4.2 Å. The possible compression in the lattice constants from their relaxed states while maintaining their half-metallic nature is up to 4% for both compounds. Copyright © 2012 Wiley Periodicals, Inc.
  • Digital Object Identifier (doi)

    Author List

  • Arif S; Ahmad I; Amin B; Maqbool M
  • Start Page

  • 2668
  • End Page

  • 2674
  • Volume

  • 112
  • Issue

  • 14