First-principle calculations of structural, electronic and magnetic investigations of Mn2RuGe1-xSnx quaternary Heusler alloys

Semari F., Dahmane F., Baki N., Al-Douri Y., Akbudak S., UĞUR G., ...More

CHINESE JOURNAL OF PHYSICS, vol.56, no.2, pp.567-573, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 56 Issue: 2
  • Publication Date: 2018
  • Doi Number: 10.1016/j.cjph.2018.01.015
  • Journal Name: CHINESE JOURNAL OF PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.567-573
  • Keywords: First-principle calculations, Electronic structure, Heusler alloy, Half-metallic, HALF-METALLIC FERRIMAGNETISM, 1ST PRINCIPLES, OPTOELECTRONIC PROPERTIES, GE, AL, SI, PREDICTION, EXCHANGE, MN, GA
  • Gazi University Affiliated: Yes

Abstract

First-principles calculations were used to calculate the structural, electronic and half-metallic ferromagnetism of Mn2RuGe1-xSnx (x = 0, 0.25, 0.50, 0.75, 1) Heusler alloys. The Hg2CuTi-type structure is found to be energetic more than Cu2MnAl-type structure for both Mn2RuGe and Mn2RuSn compounds. The calculated lattice constants for Mn2RuGe and Mn2RuSn are 5.91 angstrom and 6.17 angstrom, respectively. The electronic band structures and density of states of Mn2RuGe show a half metallic character with total magnetic moments, 2 mu(B) per formula unit that are in good agreement with Slater-Pauling rule with indirect band gap, 0.31 eV along the direction Gamma -X. It is observed that the total magnetic moment per cell increases as Sn concentration increases in the Heusler alloys.