Synthesis and magnetic properties of TbMnO3 nanorods

Abstract

TbMnO3 rods-like morphology on nanoscale were prepared by chemical co-precipitation route and their magnetic properties were studied. We were able to synthesise nanorods measuring around 100 nm in average size. SEM image confirmed the morphology and average size of TbMnO3. Orthorhombic phase was indexed from XRD data. The formation of metal-O bond in the TbMnO3 was confirmed by FT-IR. The temperature dependence of the zero-field cooled (ZFC) and the field-cooled (FC) magnetisation for different magnetising field showed well-defined feature around 8 K corresponding to the antiferromagnetic ordering of Tb3+ moments. The irreversibility in magnetisation curves suggests that the TbMnO3 nanorods exhibit cluster glass behaviour, rather than spin glass behaviour. A slight magnetic hysteresis observed at 4 K, and the magnetisation is almost saturated at high field, which is due to a weak ferromagnetism of Mn arrays. © 2013 Copyright Taylor and Francis Group, LLC.