抄録
Measurement of the Curie temperature was made on the (Co1−xMnx)2P, 0.3≤x≤0.7, compounds by the ac susceptibility under pressure up to 60 kbar. The Curie temperature Tc of each concentration increased with increasing pressure and was represented by a function of pressure, P, as Tc=Tc0+αP+βP2. The constants Tc0 (Tc at P=0), α and β took maxima in the vicinity of x=0.5. The results obtained are analyzed on the basis of the pair interaction model, and it was suggested that the interatomic-distance dependence of the exchange interaction energy between the Mn atoms oscillates.
