Synthesis of α-Fe<sub>2</sub>O<sub>3</sub> Nanowires and its Magnetic Properties

作者：Yi Liu, X.F. Rui, Y. Fu, Han Zhang · 发表于：Journal of Metastable and Nanocrystalline Materials · 年份：2005 · DOI：10.4028/www.scientific.net/jmnm.23.243 · 被引用次数：5 · 研究领域：Iron oxide chemistry and applications、Magnetic Properties and Synthesis of Ferrites、Multiferroics and related materials

a-Fe2O3 nanowire was successfully synthesized by oxidation of pure iron. The as-synthesized a-Fe2O3 nanowire arrayed normal to the surface of the substrate, were perfect single crystals with diameters of 20 to 40 nm and lengths varying from 2 to 5 µm. The magnetic property of the nanowires was studied, and some interesting phenomena were observed. The magnetic moment of the nanowire shows an antiferromagnetic behavior at high temperature and a weakly ferromagnetic behavior at low temperature. The block temperature of the a-Fe2O3 nanowire was found to be significantly higher than that of a-Fe2O3 nanoparticle.