Robust half-metallic ferromagnet of quaternary Heusler compounds ZrCoTiZ(Z = Si, Ge, Ga and Al)

Electronic structure and half-metallicity of new quaternary Heusler alloys NiFeTiZ (Z=Si, P, Ge, and As)

“…The electronic structure studies on the quaternary Heusler alloys CoFeTiZ and CoFeVZ (Z¼ Al, Ga, Si, Ge, As, and Sb) showed that CoFeTiSi, CoFeTiAs, and CoFeVSb had HM characteristic, CoFeTiAl and CoFeTiGa were conventional semiconductors, and other alloys were nearly halfmetal [24]. Berri et al [25][26][27] also predicted that CoFeTiSb, ZrFeTiAl, ZrFeTiSi, ZrFeTiGe, ZrNiTiAl, ZrCoTiSi, ZrCoTiGe, ZrCoTiGa, and ZrCoTiAl quaternary Heusler compounds were HM ferromagnets. Recently, Benkabou et al [28] showed that CoRhMnGe and CoRhMnSi were HM ferromagnets, while CoRhMnAl and CoRhMnGa were nearly HM alloys.…”

Investigation of structural, electronic and magnetic properties of 1:1:1:1 stoichiometric quaternary Heusler alloys YCoCrZ (Z=Si, Ge, Ga, Al): An ab-initio study

“…Usually ternary full and half Heusler alloys obey the rule [31] and [12] respectively. To sum this up, we talk about the quaternary Heusler alloys, they can obey either of the two rule i.e the rule of 18 [24,27,32] or the rule of 24 [33,34]. In present study the Slater Pauling rule of 18 is effectual for all alloys.…”

“…If we look the bonding region on total DOS in minority spin versions of , came to aver that Co is the most participated in this case and second most contributor is Y and less states are included from Cr, Z atoms in all compounds. character in as in [27] except in , that is the t 2g , t 1u and e u, t 2g in spin down version forming the bonding and anti-bonding region respectively. The difference is that t 1u orbital [27] …”

“…character in as in [27] except in , that is the t 2g , t 1u and e u, t 2g in spin down version forming the bonding and anti-bonding region respectively. The difference is that t 1u orbital [27] …”

The Electronic, Magnetic, Half-Metallic and Mechanical Properties of the Equiatomic Quaternary Heusler Compounds FeRhCrSi and FePdCrSi: A First-Principles Study

“…Very recently, a series of new EQHs with a 4d transition element have been reported. Some of them are as follows: Berri et al have investigated the robust half-metallicity of the ZrCoTiZ (Z = Si, Ge Ga and In) [23]. The half-metallic and mechanic characters of ZrRhHfZ (Z = Al, Ga and In) [24] and FeCrRuSi [25] were investigated by Wang et al Guo et al have reported the excellent half-metallic property of ZrFeVZ (Z = Al, Ga and In) [26].…”