摘要
采用溶胶-凝胶方法制备了Ti（1-x）CoxO2样品。研究了不同的热处理温度和掺杂浓度对样品晶型和颗粒尺寸的影响。样品400℃热处理呈锐钛矿相，600℃转变为全红石相并且晶粒尺寸明显增大。掺杂对晶型没有影响，但是随掺杂量的增大晶格常数减小。
Ti（1-x）CoxO2（ x =0. 04 -0. 1 ） compounds were fabricated by the sol - gel technique and were annealed in air at different temperatures. The crystalline phase and crystallite size were studied in detail. The samples annealed at 400℃ show single anatase phase . With annealing temperature up to 600℃, anatase phase transforms to futile phase and crystallite size increases rapidly. The doping does not affect crystalline phase but the lattice constant is observed to decrease with the increasing x.
出处
《中国材料科技与设备》
2006年第3期89-92,共4页
Chinese Materials Science Technology & Equipment
基金
河北省自然科学基金资助项目（E2005000178）
河北省教育厅基金资助项目（B2003110＆2004442）
关键词
溶胶-凝胶
相变
颗粒尺寸
Sol - gel
Phase transforms
Crystallite size
