摘要

Understanding the magnetic anisotropy of antiferromagnetic (AF) transition metal oxides is a matter of importance for its future application in spintronics. In this study we have carried out temperature and field-dependent magnetization measurements to investigate the magnetic anisotropy of AF Cr2O3 nanorods (NRs) with < d >(XRD) = 24 nm diameter. Our experimental findings suggest that the observed field-cooled memory effect from exchange-coupled Cr2O3 NRs is mediated by unidirectional anisotropy. This finding opens an opportunity for devices utilizing the anisotropy field of bare AF Cr2O3 nanocrystalline structures.