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Magnetization, magnetic susceptibility, and crystal structure are investigated on the ternary chromium arsenides CrM′As (M′=Ru,Rh,Pd) and ternary manganese phosphides and arsenides MnM′P(M′=Rh,Pd) and MnM′As(M′=Ru,Pd). MnRhP, MnRuAs, and MnPdAs are ferromagnets with a Curie temperature of Tc=401, 496, and 210 K, respectively. CrRhAs is an antiferromagnet with a Néel temperature of TN=165 K. MnPdP and CrPdAs show spin-glass-like freezing. A magnetic order-order transition is observed for CrRuAs. Susceptibility χ versus temperature curves are well expressed by a formula χ =C′/(T − θ′P)γ for all present compounds. The values of γ are about 3/2 for manganese compounds and CrPdAs, and about 1/2 for CrRuAs and CrRhAs.
Kanomata et al. (Mon,) studied this question.