New Compounds of the Cl_b, Cl Types of RhMnSb, IrMnSn and IrMnAl, New L2₁ (Heusler) Type of Ir₂MnAl and Rh₂MnAl Alloys, and Magnetic Properties

Prediction of composition for stable half-Heusler phases from electronic-band-structure analyses

“…Masumoto et al [47] has reported deviation from the equiatomic composition for IrMnSn (20) and as seen in Fig. 8(a), the actually observed composition is shifted in the direction predicted by the vec st (x,y) line, but the amount of added electrons are not as extensive as anticipated according to the rigid-band approach.…”

“…8(c)). Both van Engelen et al [48] and Masumoto and Watanabe [47] report compositions other than 1:1:1, but while the former authors confirm a rather large amount of added electrons the latter authors reports a composition along the vec eq (x,y) line. Without further experimental investigations of the Rh-Mn-Sb system it is difficult to judge whether these compositions coexist as parts of a larger homogeneity region.…”

“…8. Predicted location of composition compared with data from literature for the (stable) (a) IrMnSn [47], (b) IrMnSb [21], (c) RhMnSb [47,48], and (d) PtMnSn [29,49] phases. The equiatomic composition is marked by open circle, and composition data from literature are shown by filled symbols.…”

Magnetic properties of Heusler alloys Ru2MnZ (Z=Si, Ge, Sn and Sb)

“…Exceptional alloys are Pd 2 MnZ (Z = Al and In) [20][21][22], Pt 2 MnZ (Z = Al and Ga) [23], Rh 2 MnAl [24], Ir 2 MnZ (Z = Al and Ga) [24,25] and Au 2 MnZ (Z = Ga and In) [26], where these alloys are all antiferromagnets. Traditional idea for the alignment of the magnetic moments of different Mn atoms is the indirect exchange mechanism (the s-d exchange mechanism) as mentioned above.…”

Electronic structure and chemical bonding in half-Heusler phases

“…[1,2,8,9,[37][38][39]) electronic classification according to calculations a , and calculated and experimental (quoted from Refs. [1,2,8,9,38,[40][41][42][43] density. All these tools have been used to explore the bonding properties.…”