Synthesis, nuclear structure, and magnetic properties of LaCr1−yMnyO3 (y = 0, 0.1, 0.2, and 0.3)

The nuclear structure and magnetic properties of perovskite-type samples of compositions LaCr1−yMnyO3 (y = 0, 0.1, 0.2, 0.3) have been studied using neutron powder diffraction technique and magnetization measurements. All samples have orthorhombic structure with space group Pnma (No. 62) in the temperature range 1.5–400 K. The pure lanthanum chromate LaCrO3 is a G-type antiferromagnet with a Néel temperature of 290 K. The Mn substituted samples also order antiferromagnetically at about 290 K, with canted magnetic moments yielding a ferromagnetic component.