Site and probe dependence of hyperfine magnetic field in L21 Heusler alloys X2MnZ (X=Ni, Cu, Rh, Pd and Z=Ga, Ge, In, Sn, Pb)

Computational study of structural stability, elastic, electronic, magnetic and thermodynamic properties of the Rh2-based full-Heusler compounds: Rh2MnZ (Z = Sn, Pb, Tl) by FP-LAPW method

“…2, that the ferromagnetic state is the most stable states as compared to the other states in the AlCu 2 Mn-type structure for all the studied compounds due to its lowest total energy. This result confirms that L2 1type structure agrees quite well with previous experimental works reported by Pillay et al, [17], Dhar et al, [18], and Jha et al, [19], and theoretical results of Jezierski et al, [31] and Sanvito et al, [34] using first-principle calculation methods based on the DFT. The calculated total unit cell energy as a function of unit cell volume is fitted to Murnaghan's equation of state [46] to obtain ground state properties, such as the equilibrium lattice constants, the bulk modulus B and its pressure derivative B .…”

“…Full-Heusler compounds have recently attracted a strong attention for their relatively high Curie temperature and large magnetic moment [1][2][3][4][5][6][7][8][9], and for their useful applications as ferromagnetic shape memory alloys [10][11][12], spintronic devices [13] and magnetic actuator [14]. Amongst the full-Heusler alloys, the Rh containing compounds, which have recently investigated by many theoretical and experimental researchers [15][16][17][18][19][20][21][22][23][24][25][26][27][28] to determine different properties, was firstly studied by Suits [29] to investigate the magnetic and structural properties for ferromagnetic compounds of the form Rh 2 MnX where X is Al, Ga, In, Tl, Sn, Pb, and Sb. He found that the exchange is described in terms of competing ferromagnetic Mn-Rh-Mn interactions and antiferromagnetic Mn-Mn interactions.…”

Magnetic properties of Heusler alloy Rh2NiGe

“…This result indicates that Rh 2 YSn is a weak itinerant electron ferromagnet. On the other hand, most studies of the magnetic properties of Rh 2 YGe (Y = 3d metal) concentrated on Rh 2 MnGe [1,7,9,[11][12][13][15][16][17]. Very little is known about the magnetic properties of Rh 2 YGe (Y = 3d metal) series except for Rh 2 MnGe.…”

“…In X 2 YZ, X atoms occupy the A and C sites, and Y and Z the B and D sites, respectively. Among many Heusler alloys, several investigations on magnetic and crystallographic properties of Rh 2 YSn, where Y = V, Cr, Mn, Fe, Co, Ni and Cu have been described in the literature [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. For Y = Mn, Ni, or Cu, the crystal structure is the fully ordered cubic Heusler L2 1 structure.…”

Hyperfine field distributions in disordered Mn2CoSn and Mn2NiSn Heusler alloys

“…Magnetic properties of X 2 YZ alloys arise from magnetic moments on transition metal atoms located on either the X or Y sites. Extensive studies have been carried out using Heusler alloys by employing hyperfine methods to understand the coupling mechanism responsible for magnetic hyperfine fields at non-magnetic sites (Brooks and Williams 1974;Dunlap et al 1981;Dunlap and Jones 1982;Jha et al 1983;Ritcey and Dunlap 1984;Carbonari et al 1993). The hyperfine field systematics in cobalt based Heusler alloys are quite different from systematics in Heusler alloys which contain only Mn as the magnetic atom (Delyagin et al 1981;Dunlap and Stroink 1982).…”