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Sol-Gel工艺Si基Bi4 Ti3 O12铁电薄膜制备与晶相结构研究 王耘波1,于军1,王华2,秦冬成2 (1.华中科技大学电子科学与技术系,湖北,武汉,430074;2.桂林电子工业学院通信与信息工程系,广西,桂林,541004) 摘要:采用Sol-Gel工艺制备了Si基Bi4TiO12铁电薄膜.研究了退火温度,退火时间,薄膜厚度等对薄膜晶相结构的影响.研究表明,退火温度对Si基Bi4Ti3O12铁电薄膜晶相结构的影响最为显著,而且随退火温度升高,Bi4Ti3O12薄膜更趋向于沿c-轴取向的生长;退火时间在30分钟内对薄膜晶相结构的影响比较明显;薄膜厚度及30分钟以上的退火处理对薄膜晶相结构的影响不大. 关键词:Sol-Gel法; 铁电薄膜; 晶相结构; 制备工艺; [全文内容正在添加中] ......
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铝单醇盐Sol-Gel法合成镁铝尖晶石纳米粉及烧结行为的研究 张树人1,袁颖1,游文南1 (1.电子科技大学微电子与固体电子学院,成都,610054) 摘要:以四氢呋喃作稳定剂,通过异丙醇铝在硝酸镁溶液中水解的Sol-Gel过程合成了MgAl2O4尖晶石纳米粉体,采用DTA,XRD及TEM等分析手段研究了其前驱体的晶化过程和不同煅烧温度对尖晶石粉体晶粒尺寸及烧结性能的影响.结果表明,该方法能明显降低MgAl2O4的合成温度,在900℃已能得到单一尖晶石相纳米粉体,一次粒子平均粒径约为20nm.并且,900℃煅烧的粉体烧结活性最高,在1600℃烧结即能获得相对密度为99%的致密尖晶石陶瓷. 关键词:单醇盐Sol-Gel法; 镁铝尖晶石; 纳米粉; [全文内容正在添加中] ......
改进的sol-gel工艺制备细晶Ba0.6Sr0.4TiO3陶瓷及其介电性能的研究 张红芳1,张良莹1,姚熹1 (1.同济大学,功能材料研究所,上海,200092) 摘要:用改进的sol-gel工艺制备了细晶钛酸锶钡(Ba0.6Sr0.4TiO3,BST)陶瓷块体,研究了BST陶瓷的结晶与介电性能.在这种改进sol-gel的工艺中,用传统的固相反应煅烧形成BST粉体,经高能球磨制备BST纳...相变. 关键词:钛酸锶钡陶瓷; 改进的sol-gel工艺; 介电特性; 弥散相变; [全文内容正在添加中] ......
Comparison in characterization of composite and sol-gel coating on AZ31 magnesium alloy WANG Zhen-lin(王振林), ZENG Rong-chang(曾荣昌) School of Materials Science and Engineering, Chongqing... sol-gel process annealing at 300 ?C and a composite coating was also deposited using Al2O3 particles dispersed sol followed by phosphating treatment and annealing at 300 ?C. The morphologies......
Preparation of Ca Doped Lanthanum Chromite by Sol-Gel Process Zang Bangqiang1,Li DeHui2,Ao Qing1,SUN Liangcheng1,LIU Ruwei1 (1.Collage of Material Science and Engineering, Shandong University, Jinan 250061, China;2.Baotou Research Institute of Rare Earth, Baotou 014010, China) Abstract:Super fine particles of calcium-doped lanthanum chromites were prepared by the sol-gel process in which......
Sol-gel synthesis and photoluminescence of LaPO4?Eu3+ nanorods GAO Rui(高 锐)1, QIAN Dong(钱 东)1, LI Wei(李 卫)1, 2 1. School of Chemistry and Chemical Engineering, Central South University, Changsha... rod shape have been successfully synthesized by a simple sol-gel method. The procedure involves formation of homogeneous, transparent, metal-citrate-EDTA gel precursors, followed by calcination......
Sol-gel法制备多铁性Bi_(0.85)Eu_(0.15)FeO_3薄膜及其性能 李杰1,黄志雄2,郭冬云2,付承菊2 (1.重庆科技学院机械工程学院,重庆,400042;2.武汉理工大学材料科学与工程学院,武汉,430070) 摘要:采用Sol-gel法在Pt/Ti/SiO_2/Si衬底上制备了Bi_(0.85)Eu_(0.15)FeO_3薄膜.研究了退火温度对其晶相形成的影响,发现...耗分别为80,0.024,饱和磁化强度约为26.2emu/cm~3. 关键词:Sol-gel法; Bi0.85Eu0.15FeO3; 薄膜; 介电性能; 铁电性能; 铁磁性能; sol-gel method; Bi_(0.85)Eu_(0.15)FeO_3 thin film; dielectric properties; ferroelectric properties......
Sol-Gel法制备PZT铁电薄膜新进展 姜兆华1,赵连城2,王福平1,于艳菊2 (1.哈尔滨工业大学应用化学系,;2.哈尔滨工业大学材料科学与工程学院,) 摘要:从底电极的选择,过渡层的引入,外延膜的生长,取代阳离子的改性四个方面介绍了Sol-Gel法制备PZT铁电薄膜的研究进展,简述了PZT的Sol-Gel机理研究现状和引起PZT铁电薄膜极化疲劳的原因,分析了Sol-Gel法制备PZT铁电薄膜研究中存在的问题,并提出展望. 关键词:PZT; 铁电; 薄膜; Sol-Gel; [全文内容正在添加中] ......
YAG: Ce Phosphors for WLED via Nano-Pesudoboehmite Sol-Gel Route Ming Nan1,Meng Yanshuang2,Zhang Na1,Wang Dajian1,Zhang Xiaosong1,Li Lan1 (1.Institute of Materials Physics, Tianjin University... sol-gel method by peptizing nano-pesudoboehmite particulate. It is found that YAG phase from the dried gel powders appears at 1000 ℃ then the pure YAG phase exists at a relatively lower sintering......
