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

Low-temperature neutron diffraction measurements have been carried out on the La1−xNdxCrO3 (x=0.05x=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 Néel temperatures, between Cr3+ ions and with moments close to the free Cr3+ ionic moment at the lowest measured temperature. There was no indication of Nd3+ moment ordering down to 12 K.