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溶胶–凝胶法制备BST薄膜的结晶特性研究 被引量:2

Research on the Crystalline Properties of (Ba_(0.65)Sr_(0.35))TiO_3 Thin Films Prepared by Sol-gel Method
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摘要 采用改进的溶胶-凝胶(sol-gel)工艺配制了(Ba0.65,Sr0.35)TiO3(BST)溶胶.利用旋转涂覆工艺将BST溶胶涂覆在SiO2/Si衬底上,在不同的热处理条件下制备出BST薄膜.XRD分析结果表明:制得的BST薄膜形成了单一钙钛矿结构;AFM测试结果表明,BST薄膜表面平整致密,无裂纹.表面均方根粗糙度为3~6nm,晶粒大小分布均匀,直径约为40~100 nm.随着热处理温度的提高,BST薄膜的晶粒变大,表面粗糙度变大. Ba0.65,Sr0.35)TiO3(BST) sols were prepared by an improved sol-gel method. Using a spinning-coating process, the BST sols were coated on SiO2/Si substrates and then they were annealed to form crystalline BST thin films at different temperature conditions. XRD analyses show that all the BST films have formed pure cubic perovskite structure; AFM graphs show that BST films are smooth, dense and crack-free microstructure. The Root Mean Square of these films is 3~6 nm and the average grain sizes is 40~100 nm. The RMS and grain size of BST films become larger with higher annealing temperature.
出处 《电子元件与材料》 CAS CSCD 北大核心 2005年第1期25-28,共4页 Electronic Components And Materials
基金 国家自然科学基金资助项目(10175045)
关键词 无机非金属材料 BST薄膜 溶胶-凝胶法(sol-gel) 微结构 inorganic non-metallic materials BST thin films sol-gel method microstructure
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二级参考文献2

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同被引文献16

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