王立秋

个人信息Personal Information

副教授

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:化工学院

学科:功能材料化学与化工

办公地点:化工综合楼A306

联系方式:lqwang@dlut.edu.cn Lqwang218cn@163.com

电子邮箱:Lqwang@dlut.edu.cn

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Synthesis and characterization of Ba0.5Sr0.5TiO3 nanoparticles

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论文类型:期刊论文

发表时间:2009-01-15

发表刊物:4th Asian Conference on Crystal Growth and Crystal Technology

收录刊物:SCIE、EI、CPCI-S、Scopus

卷号:311

期号:3

页面范围:605-607

ISSN号:0022-0248

关键字:Crystallites; Barium compounds; Dielectric materials

摘要:Ba0.5Sr0.5TiO3 narroparticles were successfully prepared by calcined stearic acid gel in air. The as-prepared nanoparticles were characterized by X ray diffraction, transmission electron microscope, Fourier transform infrared spectrometry, UV/vis diffuse reflectance spectra and thermal gravimetric analysis, respectively. The results show that the calcined process of stearic acid get consists of a series of oxidation and combustion reactions in air. The formation of Ba0.5Sr0.5TiO3 phase starts at around 500 C and continues up to 700 C in our current experiments. BaCO3 can coexist with Ba0.5Sr0.5TiO3 phase at low calcination temperature, and then decreases quickly with increasing the calcination temperature. TEM images of Ba0.5Sr0.5TiO3 nanoparticles prepared at 600 C show that the size of most Ba0.5Sr0.5TiO3 nanoparticles is around 50-80 nm. The nanoparticles are almost ellipse in shape and link together to form necks among nanoparticles. (C) 2008 Elsevier B.V. All rights reserved.