Magnetic SiO2/Fe3O4 colloidal crystals

作者：Huang Chih Kai^*; Hou Chia Hung; Chen Chii Chang; Tsai Yen Ling; Chang Li Ming; Wei Hung Sen; Hsieh Kuo Huang; Chan Chia Hua

来源：Nanotechnology, 2008, 19(5): 055701.

DOI：10.1088/0957-4484/19/05/055701

We proposed a novel technique to fabricate colloidal crystals by using monodisperse SiO2 coated magnetic Fe3O4(SiO2/Fe3O4) microspheres. The magnetic SiO2/Fe3O4 microspheres with a diameter of 700 nm were synthesized in the basic condition with ferric sulfate, ferrous sulfate, tartaric acid and tetraethyl orthosilicate (TEOS) in the reaction system. Monodisperse SiO2/Fe3O4 superparamagnetic microspheres have been successfully used to fabricate colloidal crystals under the existing magnetic field.

• 出版日期2008-2-6
• 单位中央民族大学