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Y. C. Gao,X. T. Wang,H. Rozale,J. W. Lu 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.67 No.5
The electronic structures, magnetic properties and half-metallicity of Zr2VZ (Z = Al, Ga, In) bulk materials were investigated through first-principles calculations. Band structure calculations showed that Zr2VZ (Z = Al, Ga, In) alloys with an AlCu2Mn-type structure were conventional ferrimagnents. However, Zr2VZ (Z = Al, Ga, In) alloys with a CuHg2Ti-type structure were predicted to be half-metallic ferrimagnets that were quite robust against hydrostatic strain and tetragonal deformation. The total magnetic moment of the Zr2VZ (Z = Al, Ga, In) alloys with a CuHg2Ti-type structure was 2 μB per formula unit and followed the conventional Slater-Pauling rule: Mt = 18 − Zt. (Mt is the total magnetic moment per unit cell and Zt is the valence concentration) Furthermore, the origin of the band gap in the Zr2VZ (Z = Al, Ga, In) alloys was also well studied. All of these results indicate that these alloys, when they are successfully prepared, are good candidates for practical applications in spintronics.
L. Zhang,X.T. Wang,H. Rozale,Y.C. Gao,L.Y. Wang,X.B. Chen 한국물리학회 2015 Current Applied Physics Vol.15 No.10
The electronic structures, magnetic properties and half-metallicity in Zr2IrZ (Z = Al, Ga, In) alloys with the Hg2CuTi-type structure were systematically investigated by using the first-principle calculations. Zr2IrZ (Z = Al, Ga, In) alloys are predicted to be half-metallic ferrimagnets which are quite robust against hydrostatic strain and tetragonal deformation. The total magnetic moment of Zr2IrZ (Z = Al, Ga, In) alloys mainly originates from the 4d electrons of Zr atoms and follows the conventional Slater-Pauling rule: Mt = Zt18. (Mt is the total magnetic moment per unit cell and Zt is the valence concentration). The origin of the band gap for Zr2IrZ (Z = Al, Ga, In) alloys is also well studied. Unconventionally, Zr2Ir-based alloys contain element with 5d valence electrons, which implies a wider field to search for new halfmetallic materials.