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 per ovskite family, Nd1-xTiO3 for x = 0, 0.05, and 0.10, have been investi gated. It is found that these compounds adopt the GdFeO3-type structur e belonging to the space group Pnma. Magnetic susceptibility measureme nts indicate paramagnetic Curie-Weiss behavior at temperatures typical ly 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. In vestigation by low-temperature neutron diffraction reveals evidence fo r magnetic ordering on both the titanium and neodymium sublattices. Th e 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, t he refined magnetic moments on the Nd3+ Sublattice are determined to b e 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 b ehavior vanishes at the x = 0.10 composition. (C) 1996 Academic Press Inc.