Magnetic properties of Ce1-xNdxTiO3 and some solid solution orthotitanatesLn(1-x)Ln ' xTiO3 (Ln and Ln '= La to Sm; 0 <= x <= 1)

Magnetic properties of the solid solution orthotitanate Ce1-xNdxTiO3 have b een studied, where the characteristic susceptibility peaks are found in the ir susceptibility-temperature (chi-T) curves as in La1-xSmxTiO3 and Pr1-xNd xTiO3. The common features of this phenomenon are the pronounced magnetic h ysteresis at T-P (susceptibility peak temperature), and its significant dim inishment above and below T-P. The properties for some other solid solution s such as Ce1-xSmxTiO3 were also investigated. Though susceptibility peaks were found for a few of these systems, they were quite vague compared with those for the above three systems. From DC magnetization-relaxation and AC susceptibility measurements, the formation of a cluster-glass state is assu med to be a possible origin of the susceptibility peak in Ce1-xNdxTiO3, as was suggested also for La1-xSmxTiO3. Powder neutron diffraction measurement s for Ce0.5Nd0.5TiO3 revealed that neither long-range magnetic order nor st ructural changes exist below room temperature. The above interpretation sup ports this result. (C) 2000 Academic Press.