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., ...Daha Fazla

CHINESE JOURNAL OF PHYSICS, cilt.56, sa.2, ss.567-573, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 56 Sayı: 2
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.cjph.2018.01.015
  • Dergi Adı: CHINESE JOURNAL OF PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.567-573
  • Anahtar Kelimeler: First-principle calculations, Electronic structure, Heusler alloy, Half-metallic, HALF-METALLIC FERRIMAGNETISM, 1ST PRINCIPLES, OPTOELECTRONIC PROPERTIES, GE, AL, SI, PREDICTION, EXCHANGE, MN, GA
  • Gazi Üniversitesi Adresli: Evet

Özet

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.