Low-temperature neutron diffraction study of La1−xNdxCrO3 (x=0.05, 0.1, 0.2 and 0.25)

Abstract Low-temperature neutron diffraction measurements have been carried out on the La 1− x Nd x CrO 3 ( x = 0.05 , 0.1, 0.2 and 0.25) compounds, which are all orthorhombic perovskites (space group Pbnm ), in order to elucidate their magnetic structures. Thermal evolution of magnetic structure using Rietveld analysis showed that they all had a G-type antiferromagnetic alignment of spins at all temperatures below their respective Neel temperatures, between Cr 3+ ions and with moments close to the free Cr 3+ ionic moment at the lowest measured temperature. There was no indication of Nd 3+ moment ordering down to 12 K.