Journal of Alloys and Compounds, Volume 550, 15 February 2013, Pages 348–352.
Zu Peng Chena, Wen Qi Fanga, Bo Zhanga, b, Hua Gui Yanga.
Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China AND
Department of Physics, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
We report here a synthesis method for preparing single crystal Zn ferrite (ZnFe2O4) nanocubes with a high yield in aqueous solution. The morphology, structure and composition of the ZnFe2O4 were investigated by SEM, TEM, XRD, XPS, FT-IR and ICP-AES. The as-prepared sample exhibits uniform cubic morphology. Moreover, the ZnFe2O4 nanocubes demonstrate drastically enhanced saturation magnetization value Ms. and the coercivity value Hc, compared to those of regular ZnFe2O4 nanocrystallines generated by conventional wet chemical processes. The synthetic strategy that introduces Fe ions into the tetrahedral A sites may be extended to prepare other ferrits. More importantly, the cationic substitution method reported in this work provides a new strategy to tailor the magnetic behavior of ternary magnetic nanocrystallines.
Being as an important member of magnetic materials family, ZnFe2O4 has attracted extensive efforts to improve its magnetic property. Herein, we introduce a straightforward method to fabricate high magnetic ZnFe2O4 single crystal nanocubes with relatively high yield in aqueous solution, in which Fe2+ has been used as precursor to regulate the ions distribution. The saturation magnetization value (Ms.) and the coercivity value (Hc) of the obtained nanocubes are up to 40.5 emu.g-1 and 90 G at ambient temperature, which is much higher than that of most of the reported uniform Zinc ferrite nanocrystallines. The cationic substitution method presented here provides new insights into tailoring the magnetic property of ternary magnetic nanocrystallines and the possibility to apply this functional material on a large scale.