抄録
The magnetic and electrical properties are reported in the new solid solutions BaCo1-xCuxS2 and BaNi1-xFexS2. Both compounds show spin-glass-like behavior, although the type of spin frustrations is different with each other. BaCo1-xCuxS2 shows a competition type spin-glass behavior with reentrant phenomenon from antiferromagnetic to spin-glass at low temperatures. BaNi1-xFexS2 shows a dilute type spin-glass behavior together with super-paramagnetic properties. The temperature variation of 57Fe Mössbauer spectra in BaNi0.8Fe0.2S2 is explicable in a framework of cluster-glass.
