Preparation and characterization of silica-coated Fe₃O₄ nanoparticles used as precursor of ferrofluids

Ruo-Yu Hong, Jian-Hua Li, Shi-Zhong Zhang, Hong-Zhong Li, Ying Zheng, Jian-min Ding and Dong-Guang Wei

Applied Surface Science 255 ( 6 ): 3485 - 3492 , 2009