The thermodynamic, electronic and magnetic properties of Ni2MnX (X=Ge, Sn, Sb) Heusler alloys: a quasi-hormonic Debye model and first principles study

First-principles study of structural, elastic, thermodynamic, electronic and magnetic properties for the quaternary Heusler alloys CoRuFeZ (Z = Si, Ge, Sn)

“…As it can be seen, the general structure total TDOS are similar for our compounds and because of this similarity in the most results, only CoRuFeGe results are interpreted. So, theses Figs (7,8) confirms that the main contribution to the magnetic moment of the transition elements (Co, Ru, Fe) is due to our d states and that the magnetic moment of the Ge atom is due to p states. At the Fermi level, the spin-up DOS shows a metallic property due to mainly Ru d-(t 2g +e g ) and this explains the large magnetic moment of Ru atom (see Table 4).…”

“…(7,8), respectively. As it can be seen, the general structure total TDOS are similar for our compounds and because of this similarity in the most results, only CoRuFeGe results are interpreted.…”

“…Initially, De Groot and collaborators have predicted the half-metallic (HM) ferromagnets based on electronic structure calculations [1]. Since then, some half-metals have been theoretically predicted, including CrO 2 [2], Fe 3 O 4 [3], double perovskites [4,5], zinc-blende CrAs [6,7] and Heusler alloys [8][9][10][11]. Recently, another family of Heusler compounds known as quaternary Heusler alloys with chemical formula of XXʹYZ (X, Xʹ, and Y are transition metals, and Z is a main-group element) have been considered.…”

A Critical Study of the Elastic Properties and Stability of Heusler Compounds: Phase Change and Tetragonal <i>X<sub>2</sub>YZ</i> Compounds

“…In the present study, some well-known tetragonal and cubic Heusler compounds are examined and compared with the available experimental and theoretical data [18]- [26]. Starting from the cubic phase, cubic L2 1 Ni 2 MnGa and tetragonal magneto-structural transitions that may result in half metallicity and magnetic shape memory or magnetocaloric effects.…”

First-principle investigations of the magnetic properties and possible martensitic transformation in Ni2MnX (X=Al, Ga, In, Si, Ge and Sn)

“…One class of the most widely studied Heusler alloys are those with the formula Ni 2 MnX (X¼ sp element), because they often have the magnetic shape memory effect [1], the magnetocaloric effect [2,3], and magnetic field-induced strain [4,5], implying that the Ni 2 MnX alloys maybe have the potential applications in the spintronics, magnetic sensors and actuators [6]. So, a number of the studies have been performed on the structural, magnetic and electric properties of the Heusler alloys Ni 2 MnX [1,6,[7][8][9][10][11][12][13][14][15]. The thermodynamic property of Ni 2 MnX (X ¼Ge, Sn,Sb) [10], the elastic constants and phonon properties of Ni 2 MnX (X ¼Sn, Sb) [16], the intersublattice exchange interactions and Curie temperatures of Ni 2 MnX (X ¼Ga, In, Sn, Sb) [17], and the tetragonal variants in Ni 2 MnGa alloy [18] have been reported.…”