Preparation and characterization of CoFe2O4/TiO2magnetic composite films

• 来源期刊: 中国科学B辑(英文版)
• 年，卷（期）: 2008,（9）
• 页码范围: 842-847
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11426-008-0067-7

摘要

CoFe2O4/TiO2 magnetic composite films were prepared using the sol-gel method with tetrabutyltitanate and metallic chlorates as starting materials. The effects of heat treatment temperatures on micro-structures and on magnetic properties were studied. The microstructure and properties of the samples at different heat treatment temperatures were characterized by X-ray diffraction, Raman spectrum, scanning electron microscopy, polarized microscopy and vibrating sample magnetometry. The results show that crystals of different substances grow up independently. Cobalt ferrite is evenly embedded into the titanium dioxide matrix in the prepared composite films. The magnetism of the composite films is enhanced with an increase of the heat temperature.