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Both electronic as well as magnetic characteristics of Co1-xFexMnSb (x = 0, 0.25, 0.50, 0.75, 1) composite have been studied by employing the first principle (FP) study. The FP calculation was attained using the density functional theory (DFT). The exchange–correlation term has been examined inside the generalized gradient approximation (GGA), as implemented in the Wien2k code. According to predictions, the type 3 structure of atoms will be the tremendous, optimum, and have the smallest amount of energy. The formation energy of CoMnSb and FeMnSb was minimum so it demonstrates that these alloys are optimized. CoMnSb and FeMnSb are half-metallic (HM) having the value of magnetic moment 3µB and 2µB, respectively in good agreement with the Slater-Pauling rule. These results suggest that the Mn atoms are the primary source of the magnetic moment. The values of elastic constants were determined by the crystal structure's symmetry. Additionally, the bulk modulus B, shear modulus G, Young's modulus E, as well as Poisson's ratio v have been determined using the Voigt-Reuss-Hill (VRH) method. Both examined compounds, CoMnSb and FeMnSb, have computed B/G ratios higher as compared to 1.75, indicating that these alloys are malleable. [ABSTRACT FROM AUTHOR]

Heusler materials have shown a ground-breaking role in material research because of their widespread applicability in modern technologies and multi-dimensional properties. In this study, the pressure effects on the structural, electronic, and magnetic properties of Mn2YAN (Y = Ru, Rh, and Pd) Heusler alloys are investigated. This study is carried out by employing a state-of-the-art first-principles computational approach called "full potential (FP) linearized (L) augmented plane wave plus local orbital (APW + lo)" as designed using density functional theory (DFT), and executed in WIEN2k computational code. The computed results for the lattice constants have been found to be in fairly good agreement with previously reported results in the literature. The results show that the Mn2RuSn, Mn2RhSn, and Mn2PdSn compounds are stable in the Hg2CuTi-type structure. Furthermore, under the pressure effect, the Mn2RuSn, Mn2RhSn, and Mn2PdSn compounds become half-metals at about 10 GPa, 10 GPa, and 20 GPa, respectively. [ABSTRACT FROM AUTHOR]

The first-principle calculations of density functional theory were used to study the structural, electronic, magnetic, mechanic, and half-metallic behavior of Y2MnZ (Z = Al, Ga, In) within the spin generalized gradient approximation. These compounds can be experimentally synthesized due to their negative values of the calculated formation energies. Our calculations indicate that they are more stable in Cu2MnAl-type structure. The Hg2CuTi-type structure displays half-metallic characteristic with 100% spin polarization at the Fermi level. The value of calculated magnetic moment has an integer value of 2μB for Y2MnZ (Z = Al, Ga, In) in the Hg2CuTi-type structure which well matches with magnetic moments predicted from Slater–Pauling rule. Therefore, the Y2MnZ (Z = Al, Ga, In) in the Hg2CuTi-type structure is predicted to be a candidate for possible spintronics applications. [ABSTRACT FROM AUTHOR]

The structural, electronic and magnetic properties of half-Heusler compounds XVSb (X = Fe, Co and Ni) are investigated by using the density functional theory with generalized gradient approximation (GGA), and Tran-Blaha modified Becke-Johnson (TB-mBJ) exchange potential approximation. It is found that the half-metallic gaps are generally reasonably widened by mBJ as compared to the GGAapproximation. The magnetic proprieties of XVSb (X = Fe, Co and Ni) are well defined within mBJ with an exact integer value of magnetic moment. The band gaps given by TB-mBJ are in good agreement with the available theoretical data. The FeVSb exhibits a semiconductor nature. The CoVSb and NiVSb present half-metallic behaviour with total magnetic moment of and 2B in good agreement with Slater-Pauling rule. These alloys seem to be a potential candidate of spintronic devices. [ABSTRACT FROM AUTHOR]

A first-principles method has been employed to determine the electronic, magnetic and structural characteristics of the full-Heusler alloys Fe2VAl with Sn doping. All the calculations were performed by using a computational code based on full-potential linearized augmented plane wave method called WIEN2k. The electron exchange-correlation is treated by the generalized gradient approximation within a scheme developed by Perdew, Burke and Ernzerhof (PBE-GGA). The electronic band structures of Fe2VAl1−xSnx (x = 0, 0.25, 0.50, 0.75) compounds show that the majority-spin (spin-up) exhibits a metallic characteristic, whereas the minority-spin (spin-dn) have an energy band gap. Our calculations predict that Fe2VAl1−xSnx compounds are half-metallic ferromagnets with an integer value of magnetic moment, 0, 1, 2, and 3 μB, respectively. Our findings suggest that these materials are potential candidates for manufacturing spintronic devices. [ABSTRACT FROM AUTHOR]

First-principles density functional theory (DFT) calculations with the generalized gradient approximation (GGA) have been performed to investigate electronic band structures and magnetic and half-metallic characteristic of TiCoAlSn ( x = 0, 0.25, 0.50, 0.75, 1). The optimized equilibrium lattice constants were found to be equal to 6.08 and 6.37 Å for TiCoAl and TiCoSn, respectively. These ternary Heusler compounds are found to be a complete half-metal with a total magnetic moment of 2 and 3 μ , respectively, which is in good compliance with the Slater-Pauling rule, M = Z − 18. The spin-polarized band structures and density of states (DOS) of the TiCoAlSn (0.25, 0.50, and 0.75) Heusler alloys confirm that they are half-metal due to the presence of the energy gap in the minority spin. Consequently, TiCoAlSn ( x = 0, 0.25, 0.50, 0.75, 1) alloys are predicted to be a promising candidate for the practical applications in spintronic devices. [ABSTRACT FROM AUTHOR]

Using the first-principles density functional calculations, the structural, electronic and magnetic properties of the Fe 2 XAl (X=Cr, Mn, Ni) compounds in both the Hg 2 CuTi and Cu 2 MnAl-type structures were studied by the full-potential linearized augmented plane waves (FP-LAPW) method. The exchange and correlation potential is treated by the generalized-gradient approximation (GGA) where the results show that the Cu 2 MnAl-type structure is energetically more stable than the Hg 2 CuTi-type structure for the Fe 2 CrAl and Fe 2 MnAl compounds at the equilibrium volume. The full Heusler compounds Fe 2 XAl (X=Cr, Mn) are half-metallic in the Cu 2 MnAl-type structure. Fe 2 NiAl has a metallic character in both CuHg 2 Ti and AlCu 2 Mn-type structures. The total magnetic moments of the Fe 2 CrAl and Fe 2 MnAl compounds are 1.0 and 2.0 μ B , respectively, which are in agreement with the Slater–Pauling rule M tot =Z tot − 24. [ABSTRACT FROM AUTHOR]

The structural, electronic as well as the magnetic properties of the Co2CrX (XAl, Ga and In) full-Heusler alloy have been studied using first-principles calculations performed in the framework of density functional theory (DFT) within the generalized gradient approximation (GGA). It was taken into account both possible L21 structures (i.e. Hg2CuTi- and Cu2MnAl-type). Basically, for all compounds, the Cu2MnAl-type structure is energetically more stable than Hg2CuTi-type structure at the equilibrium volume. The electronic structure calculations for Co2CrAl reveal that half-metallic (HM) character in Cu2MnAl-type structure, Co2CrGa show nearly HM behavior and Co2CrIn has a metallic character. The predicted total magnetic moment is for Co2CrX (XAl, Ga) which is in good convergence with the Slater-Pauling (SP) rule. [ABSTRACT FROM AUTHOR]

Using the full-potential linearized augmented plane-wave method of first-principles calculations of density functional theory, we have performed a systematic investigations on the structural, electronic, and magnetic properties related to the spintronic applications for gallium phosphide GaP doped with 3 d transition metal (TM) atoms such as vanadium (V), chromium (Cr), and manganese (Mn) as ternary GaGa TMP diluted magnetic semiconductors (DMSs) in zinc-blende phase at concentrations x = 0.0625, 0.125, and 0.25. The analysis of electronic and magnetic properties with various concentrations ( x) of TM revealed that GaGa VP at ( x = 0.0625, 0.125, and 0.25) and Ga TMP (TM = Cr and Mn) at ( x = 0.0625 and 0.125) are half-metallic ferromagnets (HMF) with spin polarization of 100 %. The HMF character destroyed for GaGaCrP and GaGaMnP at higher concentration x = 0.25 of Cr and Mn. The half-metallic gap increases with decreasing in concentration of impurity, and therefore, the GaGa TMP, GaGaCrP, and GaGaMnP DMSs at low concentrations appear to be better candidates for spintronic applications. [ABSTRACT FROM AUTHOR]

We investigate the structural, electronic, and magnetic properties of zinc-blende diluted magnetic semiconductors (DMS) Al TMN for transition metals (TM) = V, Cr, Mn, and Fe at x = 0.125 and 0.25, using first-principle calculations with the full-potential linearized augmented plane wave (FP-LAPW) method within the density functional theory and local spin-density approximation, in an aim to predict properties of Al TMN compounds. We have analysed the reliance of structural parameter values on the composition x in the range of x= 0.125−0.25. Results of calculated electronic structures reveal that Al TMN have stable ferromagnetic ground state and they are ideal half-metallic (HM) ferromagnetic at their equilibrium lattice constants. We have also studied the magnetic moment of Al TMN by increasing the concentration of TM atom; this is the most important source of the total magnetic moment in these alloys, while the contributions from Al, N, and interstitial moments are minor. [ABSTRACT FROM AUTHOR]

We investigate the structural, electronic and magnetic properties of the full Heusler compounds Mn2YSn (Y=Mo, Nb, Zr) by first-principles density functional theory using the generalized gradient approximation. It is found that the calculated lattice constants are in good agreement with the theoretical values. We observe that the Cu2MnAl-type structure is more stable than the Hg2CuTi type. The calculated total magnetic moments of Mn2NbSn and Mn2ZrSn are 1/n; and 2/n; at the equilibrium lattice constant of 6.18 and 6.31, respectively, for the Cu2MnAl-type structure. Mn2MoSn have a metallic character in both Hg2CuTi and Cu2MnAl type structures. Thetotal spin magneticmoment obeys the Slater-Pauling rule. Half-metal exhibits 100% spin polarization at the Fermi level. Thus, these alloys are promising magnetic candidates in spintronic devices. [ABSTRACT FROM AUTHOR]

In this paper, we use the 1rst-principles calculations based on the density functional theory to investigate structural, electronic and magnetic properties of Fe2YSn with (Y = Mn, Ti and V). The generalized gradient approximation (GGA) method is used for calculations. The Cu2MnAl type structure is energetically more stable than the Hg2CuTi type structure. The negative formation energy is shown as the evidence of thermodynamic stability of the alloy. The calculated total spin moment is found as 3µB and 0µB at the equilibrium lattice constant for Fe2MnSn and Fe2TiSn respectively, which agrees with the Slater-Pauling rule of Mt = Zt -24. The study of electronic and magnetic properties proves that Fe2MnSn and Fe2TiSn full-Heusler alloys are complete half-metallic ferromagnetic materials. [ABSTRACT FROM AUTHOR]

In this paper, the structural, electronic and magnetic properties of the GdSn3, CmSn3 and GdxCm1-xSn3 compounds (x = 0:25, 0:5 and 0:75) were studied using the full-potential linearized augmented plane wave method, within the generalized gradient approximation+U. The ground-state properties are determined for the bulk materials GdSn3, CmSn3 and GdxCm1-xSn3 crystallized in AuCu3-type structure. The calculated structural, electronic and magnetic properties of GdSn3 compound are in good agreement with the existing experimental and theoretical data. It is found that the most stable magnetic con1gurations of both compounds CmSn3 and GdSn3 are anti-ferromagnetic type A (AFM-A) and have a metallic behavior. The magnetic moment found decreases with increasing the Cm composition in GdxCm1-xSn3 compounds. The results show that the GdSn3, CmSn3 and GdxCm1-xSn3 compounds share some properties, and may well be useful for spintronic applications. [ABSTRACT FROM AUTHOR]

First-principle calculations were performed in the frame work of the density functional theory (DFT) using FP-LAPW method as implemented in Wien2k code to determine the structural stability, electronic and magnetic properties of Rh2CrGe1-xAlx (x = 0, 0.25, 0.50, 0.75 and 1). The results showed that for Rh2CrAl and Rh2CrGe, the Cu2MnAl-type structure is energetically more stable than Hg2CuTi-type structure at the equilibrium volume. The calculated densities of stats for Rh2CrAl and Rh2CrGe show half metallic and nearly half metallic behavior respectively. Rh2CrGe1-xAlx (x = 0.25, 0.50, 0.75) these alloys show half metallic character, and these compounds are predicted to be good candidates for spintronic applications. [ABSTRACT FROM AUTHOR]