Understanding the formation of ultrafine spinel CoFe2O4 nanoplatelets and their magnetic properties

Wenchao Liu, Yukkwan Chan, Jinzhu Cai, Chiwah Leung, Cheeleung Mak, Kinhung Wong, Fengming Zhang, Xiaoshan Wu, X. D. Qi

研究成果: Article同行評審

36 引文 斯高帕斯(Scopus)

摘要

Cobalt ferrite (CoFe2O4, CFO) nanoplatelets with a rhomboidal shape were synthesized through a facile hydrothermal route using a very low concentration precursor at low temperatures. The effects of reaction temperature and time on the morphologies as well as the sizes of the products were systemically investigated. The as-synthesized CFO nanocrystals showed a special rhomboidal shape with crystal growth along the (111) direction. The very low concentration precursor plays an important role in forming CFO nanocrystals with such special shape and ultrafine size. The single-phase CFO nanoplatelets synthesized at 180°C with size of 17 nm present high saturation magnetization (79.7 emu/g) and high coercivity (3100 Oe). The preparation conditions have significant effects on the crystal size and shape, magnetization and relaxation activation of the CFO nanoplatelets.

原文English
文章編號104306
期刊Journal of Applied Physics
112
發行號10
DOIs
出版狀態Published - 2012 十一月 15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

指紋 深入研究「Understanding the formation of ultrafine spinel CoFe2O4 nanoplatelets and their magnetic properties」主題。共同形成了獨特的指紋。

引用此