Band structure and magnetic properties of M3M’C antiperovskites (M=Mn, Fe; M′=Zn, Al, Ga, Sn)

Magnetism, magnetocaloric effect and positive magnetoresistance in Fe-doped antipervoskite compounds SnCMn3−xFex (x=0.05–0.20)

“…According to the previous theoretical studies, the density of states (DOS) at the Fermi level E F [N(E F )] is mainly contributed from Mn 3d electrons in Mn-based antiperovskite compounds [19]. Clearly, the [20,21]. In this framework, the electronic band width will be broadened, thus N(E F ) reduced, if the lattice shrinks.…”

XMCD study of magnetic phase transition in Mn3ZnC perovskite

“…Electronic band structure of the Mn 3 MC system has been calculated by various methods [5][6][7]. The self-consistent augmented-plane-wave (APW) calculation was first performed by Motizuki and Nagai [5], and they pointed out that the phase transition was caused by Mn 3d density of states (DOS) with a large hole at the Fermi level (E F ), a sensitive shift of E F by external parameters such as temperature, magnetic field and pressure, and by charge transfer from the M-metal.…”

Magnetic/structural phase diagram and enhanced giant magnetoresistance in Zn-doped antiperovskite compound Ga1−xZnxCMn3

“…As reported by Kamishima et al [1,6,7], in GaCMn 3 , the type of magnetic couplings (in the AFM or FM phase) is much sensitive to the average carrier density (electron-type) and any small change in carrier numbers may significantly affect the transition temperature. Generally, Zn-doping at Ga-site can be regarded as holetype doping since Zn atom contributes one electron less than Ga.…”

“…Much recently, manganese-based antiperovskite structural compounds AXMn 3 (A ¼Ga, Al, Zn; X¼C, N, B) have attracted considerable attention owing to their interesting physical properties for applications and theoretical studies [1][2][3][4][5][6][7]. For example, the giant magnetoresistance (GMR) [1,2], magnetocaloric effect (MCE) [3] and giant negative thermal expansion (NTE) [4,5].…”

“…For example, the giant magnetoresistance (GMR) [1,2], magnetocaloric effect (MCE) [3] and giant negative thermal expansion (NTE) [4,5]. As a typical antiperovskite compound, GaCMn 3 has been investigated for several decades experimentally and theoretically [1,3,6,7]. As reported previously, it displays many interesting structural/ magnetic phases with decreasing temperature, namely, the paramagnetic (PM) phase, the ferromagnetic (FM) one, the ferromagnetic intermediate (FI) one, and the antiferromagnetic (AFM) one [1,3,[8][9][10].…”