The structural and magnetic properties of Nd1-xTiO3 for x=0, 0.05, and 0.10

The structural and magnetic properties of members belonging to the perovskite family, Nd1-xTiO3 for x = 0, 0.05, and 0.10, have been investigated. It is found that these compounds adopt the GdFeO3-type structure belonging to the space group Pnma. Magnetic susceptibility measurements indicate paramagnetic Curie-Weiss behavior at temperatures typically above 100 K. Antiferromagnetic ordering of the titanium sublattice is observed at T-N of 90 and 75 K for x = 0 and 0.05, respectively. Investigation by low-temperature neutron diffraction reveals evidence for magnetic ordering on both the titanium and neodymium sublattices. The magnetic structure is found to be consistent with that of PrTiO3 and CeTiO3, having an FxCy configuration on the Nd3+ sublattice and a G(z)F(x) configuration for the moments on the Ti3+ sublattice. At 10 K, the refined magnetic moments on the Nd3+ Sublattice are determined to be 1.11(5) and 0.99(5) mu(B) and on the Ti3+ sublattice, 0.87(8) and 0.74(9) mu(B), for x = 0 and 0.05, respectively. The antiferromagnetic behavior vanishes at the x = 0.10 composition. (C) 1996 Academic Press Inc.