摘要
Magnetization measurements on two Pb1−xCexTe single crystals, at T=20mK and different field orientations, revealed magnetization steps from antiferromagnetic Ce3+-pairs. The present data, along with previous ones on Pb1−xCexS and Pb1−xCexSe, strongly support the existence of two kinds of nearest-neighbor Ce3+-pairs in these materials: one with isotropic and the other with anisotropic exchange interaction.