Structure, magnetism and transport of Ln1−xTiO3 (Ln=Ce and Pr)

Abstract Structural, magnetic and transport properties have been investigated for Ln1−xTiO3 (Ln=Ce and Pr) for 0⩽x⩽0.33. With increasing x, the crystal structures change to the double perovskite structure (Pmmm) from the orthorhombic perovskite type (Pnma) at x∼0.2. The canted-antiferromagnetic order of CeTiO3 and PrTiO3 (x=0) with Neel temperatures of ∼120 K almost disappears at x∼0.1. The transport measurements revealed metal–insulator transitions at x∼0.1, and the existence of disorder-induced localization for x=0.3.