WANG Nian, ZHOU Jing, DAI Ying

(School of Materials Science and Technology, Wuhan Univers ity of Technology, 430070)

Abstract: Single-crys talline YVO₄:Eu nanorods were synthes ized succes s fully by a Na₂EDTA- mediated hydrothermal method.The resulting products were characterized us ing XRD, SEM, TEM, HRTEM and SQUID magnetometer. The results indicated that YVO₄:Eu nanorods were in a rod- like shape with length in the range of 0.5~1μm and diameter in the range of 30~100 nm. It was found the template and the pH value of the precursor solution play an important role in determining the morphologies and growth proces s of YVO₄:Eu products . Furthermore, the magnetism of YVO₄:Eu products were characterized. YVO₄ nanocrys tals exhibit the noticeable antiferromagnetism at low temperature. And this s trong 1D anisotropy and the Eu³⁺ ions doping improved the magnetic performances remarkably.

Keywords: YVO₄:Eu nanorods , template, pH value, magnetic performances