Ab initiodesign of half-metallic fully compensated ferrimagnets: The case ofCr2MnZ(Z=P, As, Sb, and Bi)

2007/03/02 by I. Galanakis, K. Ozdogan, K. Özdoğan +4 · 3 citations
Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Heusler alloys: electronic and magnetic properties #Magnetic properties of thin films #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevb.75.172405

published as Physical Review B 75, 172405 (2007)

arxiv created 2007/03/02 · openalex publication_date 2007/05/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Electronic structure calculations from first principles are employed to design half-metallic fully compensated ferrimagnets (or, as they are widely known, half-metallic antiferromagnets) susceptible of finding applications in spintronics. Cr₂MnZ (Z=P,As,Sb,Bi) compounds have 24 valence electrons per unit cell and calculations show that their total spin moment is approximately zero for a wide range of lattice constants, in agreement with the Slater-Pauling behavior for ideal half-metals. Simultaneously, the spin magnetic moments of Cr and Mn atoms are antiparallel and the compounds are ferrimagnets. Mean-field approximation is employed to estimate their Curie temperature, which exceeds room temperature for the alloy with Sb. Our findings suggest that Cr₂MnSb is the compound of choice for further experimental investigations.

Citations

• Search for half-metallic ferrimagnetism in V-based Heusler alloys Mn2VZ (Z = Al, Ga, In, Si, Ge, Sn)
• Spintronics: Fundamentals and applications

Cited by

• Engineering the electronic, magnetic, and gap-related properties of the quinternary half-metallic Heusler alloys
• Role of conduction electrons in mediating exchange interactions in Mn-based Heusler alloys
• Exchange interactions and Curie temperatures of Mn2CoZ compounds