Crystal Structures and Magnetic Properties of the Co2Mn1−x V xSb (0 ≤ x ≤ 1) Heusler Compounds

Ak F., Güçlü F., SAATÇİ B., Kervan N., Kervan S.

Journal of Superconductivity and Novel Magnetism, vol.29, no.2, pp.409-416, 2016 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 29 Issue: 2
  • Publication Date: 2016
  • Doi Number: 10.1007/s10948-015-3273-5
  • Journal Name: Journal of Superconductivity and Novel Magnetism
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.409-416
  • Keywords: Density functional theory, Heusler compounds, Magnetic properties
  • Ankara Haci Bayram Veli University Affiliated: No

Abstract

Crystal structure and magnetic properties of the Co2Mn1−xVxSb (0 ≤ x ≤ 1) Heusler compounds have been studied by X-ray powder diffraction (XRD), magnetometric measurements, and full-potential linearized augmented plane wave (FP–LAPW) method. All compounds crystallize in a cubic Cu2MnAl-type crystal structure with the space group Fm–3m. The samples for x<0.8 have the Curie temperatures above room temperature, while the Curie temperature is observed at 68 K for the sample with x = 0.8. The saturation magnetization at 5 K decreases linearly with increasing vanadium concentration x. The values of the saturation magnetization obtained by FP–LAPW–local density approximation (LDA) calculations are in better agreement with the experimental results compared with the results obtained by FP–LAPW–generalized gradient approximation (GGA) calculations.