The microstructure and dielectric properties of titanium oxide doped with nano CuO

查看全文 作　　者：Juan [1]Li;Renli [1]Fu;Yue [1]Xu;Zhenxiao [2]Fu;Hongjuan [2]Su

机构地区：[1]College of Material Science and Technology Nanjing University of Aeronautics and Astronautics Yudao Street,No.29,Nanjing 210016,P.R.China;[2]Fenghua Advanced Technology Holding CO.,LTD Zhaoqing 526020,P.R.China

出　　处：《Journal of Advanced Dielectrics》索引2014年第4卷第3期,共7页

基　　金：The authors acknowledge the financial support of the Science and Technology projects of Guangdong Province(2011A091103002). 摘　　要：The TiO_(2) ceramics doped with nano CuO were fabricated by the conventional solid-state reaction method.The crystal structure,microstructure,microwave dielectric properties and lattice vibrations of TiO_(2) ceramics doped with nano CuO have been investi-gated.Nano CuO with higher sintering capability worked as flux former and effectively improved the sintering process of TiO_(2) ceramics.The microwave dielectric properties of TiO_(2) doped with nano CuO were much better than that doped with micron CuO at the same doping content.Raman spectra showed that the full width at half maximum of E_(g) mode of TiO_(2) doped with micron CuO was larger than nano CuO doped ones,which indicated a poor crystalline and a short phonon lifetime.TiO_(2) doped with 1wt.% nano CuO,sintered at 950℃ for 2h had compact and homogeneous microstructure and possessed the following dielectric properties:ε_(r)=106,Q×f=24808,τf=371ppm/℃. 关键词：MICROSTRUCTURE dielectric properties TiO_(2)ceramics nano CuO

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The microstructure and dielectric properties of titanium oxide doped with nano CuO

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