Magnetic ordering in TbMn0.5Cr0.5O3 studied by neutron diffraction and first-principles calculations

摘要

The structure and magnetic ordering of bulk TbMn0.5Cr0.5O3 was revealed through bulk magnetization and neutron diffraction measurements, and first-principles calculations, respectively. G-type antiferromagnetic ordering of Mn3+ and Cr3+ moments was observed in the neutron diffraction data below Néel temperature TN ∼ 84 K. In addition, below ∼40 K, short-range magnetic ordering was identified correlating to a ferromagnetic component due to the canting of the moments along the c-axis. The spin configuration is consistent with the first-principles calculations. The magnetic structure revealed in the present TbMn0.5Cr0.5O3 sample is distinct from that observed for both end members TbMnO3 and TbCrO3.