共查询到19条相似文献,搜索用时 218 毫秒
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溅射PZT薄膜的晶体结构和快速热处理 总被引:1,自引:0,他引:1
采用常温射频(RF)溅射法和快速热处理相结合的技术,在Pt/Ti/SiO2/Si衬底上,制备出具有铁电性的PZT薄膜。研究了快速热处理工艺条件对PZT薄膜性能的影响。通过Z射线衍射法、SEM和AES等方法,分析了PZT薄膜的晶体结构、微结构、薄膜和电极间的界面效应。 相似文献
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对磁控溅射PZT铁电多层薄膜进行了分析。结果表明:通过多层薄膜合理的设计和厚度控制,可以改善薄膜进一步的器件应用提供了可能性。通过研究发现,制备多层较理想的溅射条件是衬底温度T=650℃,薄膜子层厚度约为300nm,衬底则以MgO(100)单晶、Si2(100)单晶为佳。结构分析的结果显示出:PZT以铁电膜中的晶粒排列整齐,颗粒大小均匀,基本上和衬底成定向织构,膜的角度对多层膜的绝缘性能影响不大, 相似文献
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用脉冲激光淀积方法在Pt/TiO2/SiO2/Si(001)衬底上制备了掺Ta的PZT薄膜,此薄膜显示了理想的铁电性。漏电流特性表明这种异质结构中Schottky场发射机制起主要作用。扫描电镜形貌照射表明PZT薄膜结晶很好并且异质结构界面无明显扩散。 相似文献
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常压MOCVD制备MgO薄膜的研究 总被引:1,自引:0,他引:1
本文首次报道用常压金属有机化学气相沉积(AP-MOCVD)在Si(100),SiO2/Si(100)和Pt/Si(100)衬底上外延高质量的MgO薄膜。研究了衬底温度与薄膜的取向性关系和MgO薄膜的潮解特性。高纯magnesiumacetylacetonate[bis(2,4-pentanetane-diono)magnesium][Mg(CH2COCH2COCH3)2]作为金属有机源,扫描电镜(SEM),透射电镜(TEM)和X-RAY衍射实验显示,在较低的衬底温度(~480℃)下一次淀积成单晶膜。薄膜均匀,致密,结晶性和取向性很好,衬底温度(Ts)在400℃到680℃之间,在Si(100)衬底上生长的MgO薄膜都具有[100]取向,在Si(100)、SiO2/Si(100)和Pt/Si(100)衬底上生长的MgO薄膜也都具有[100]取向。 相似文献
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钛酸钡铁电薄膜的常压MOCVD制备及其物理性质的研究 总被引:4,自引:0,他引:4
本文报道了用常压金属有机化学气相沉积(APMOCVD)法在Si衬底上制备高质量的钛酸钡铁电薄膜,钡的β-二酮螯合物(Ba(DPM)2)和异丙氧基钛(TIP)作为金属有机源,在衬底温度为700℃时,在Si(100),薄膜具有完全的(001)取向,其介电常数(ε)为107。研究了衬底温度与薄膜的结晶性和取向性的关系;讨论了半导体衬底对酸钡铁电薄膜物理性质的影响,得到了薄膜的剩余自发极化强度(Pr)为2 相似文献
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Y2O3-SnO2常温气敏薄膜的Sol-Gel制备及性能研究 总被引:2,自引:0,他引:2
以无机盐SnCl2.2H2O,Y(NO3)3.6H2O为原料,无水乙醇为溶剂,采用溶胶-凝胶工艺制备了Y2O3掺杂的SnO2薄膜,采用差热-失重分析研究了Y2O3掺杂的SnO2干凝胶粉末的热分解、晶体过程。研究了Y2O3-SnO2薄膜的电学和气敏性能,从实验中得到了Y2O3掺杂份量对SnO2薄膜电学及气敏性能的影响。实验表明Y2O3掺杂的SnO2薄膜在常温下对NOx具有较好的灵敏度的选择性,并具有较好的响应恢复性能,在常温下对H2S气体也具有一定的灵敏度。 相似文献
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Fe2O3/TiO2和ZnO/TiO3纳米颗粒薄膜的亲水性能和光催化性能的研究 总被引:7,自引:1,他引:6
采用溶胶—凝胶法在玻璃上制备了锐钛矿型TiO2和过渡金属铁、锌离子掺杂的TiO2薄膜,并通过XRD、XPS、AFM表征了合成的薄膜.结果表明铁和锌离子掺入后,TiO2薄膜变的更加致密.铁离子和锌离子分别以Fe2O3和ZnO的形式存在.在紫外光照射下,TiO2薄膜表现明显的亲水性.金属离子掺杂的TiO2薄膜,亲水性能明显增强.铁离子掺入对光催化降解甲基橙有一定的抑制作用;少量的锌离子掺入对光催化降解甲基橙有促进作用,锌离子掺入量增大后,效果并不明显. 相似文献
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反应溅射NiCrOx薄膜过程及其光学性质的研究 总被引:2,自引:0,他引:2
研究了反应气体流量对磁控反应溅射NiCrOx薄膜成分和光学常数的影响,在反应溅射过程中,NiCr靶随着O2流量的增大出现毒化现象,在不同氧流量条件下可沉积出近于透明的介电薄膜和不透明的吸收薄膜,对薄膜光学常数的研究可应用到太阳能光谱选择摹制备。 相似文献
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Due to its low resistivity and excellent thermal stability, IrO2 has attracted attention as an alternative for electrode material in ferroelectric integrated circuit applications. Oriented
growth of IrO2 electrode film was investigated with the goal to control the texture of the PZT thin film. IrO2 films were prepared by DC reactive sputtering. PZT film was prepared by RF magnetron sputtering single target deposition
method. The whole layer stack was grown onto amorphous thermal oxide of a silicon wafer. The results indicate that IrO2 thin film was preferentially (200) oriented when a TiO2 seeding layer was used. The orientation relationships along the whole PZT(111)/IrO2(200)/TiO2(200)/Ti structure was discussed. 相似文献
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用电子回旋共振(ECR)等离子体辅助射频溅射沉积法制备快锂离子传导的锂磷氧氮(LiPON)薄膜. X射线光电子能谱、扫描电子显微镜、紫外可见吸收光谱等手段表征了在不同ECR功率辅助下沉积的薄膜. 结果显示, ECR等离子体对磁控溅射沉积薄膜的生长有明显的影响,能够提高N的插入量, 改变薄膜的组成与结构. 但是过高的ECR功率反而易破坏薄膜的结构, 不利于N的插入. 最佳的实验条件是在ECR 200W辅助下沉积的LiPON薄膜, 它的电导率约为8×10-6S/cm. 讨论了ECR对沉积LiPON薄膜的N插入机理. 相似文献
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Preliminary studies were conducted to develop a dimensionally stable anode (DSA) electrode prepared by reactive sputtering method. The microstructure, surface morphology and electrochemical properties of iridium oxide (IrO2) coatings synthesized by unbalanced magnetron sputtering (UBMS) and conventional DSA electrode were compared. In addition, the possibilities of IrO2 films synthesized by UMB on a real DSA electrode were investigated by electro-chemical application test. The degree of non-stoichiometry and surface area were closely related to the electro-chemical activity of the IrO2 electrode. The feasibility of making a DSA electrode prepared by PVD technique was demonstrated through the present work. 相似文献
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Ramesh M. KrishnaTimothy C. Hayes Daniel KrementzGeorge Weeks Adrián Méndez TorresKyle Brinkman Krishna C. Mandal 《Materials Letters》2012,66(1):233-235
In this work, we investigate the optical and electrical properties of various transparent conductive oxide (TCO) thin films deposited on insulating ceramics for emerging optoelectronic applications. Thin films investigated include indium tin oxide (ITO), ruthenium oxide (RuO2), and iridium oxide (IrO2) on Al2O3 ceramic substrates. The conducting films have been deposited by various techniques including RF magnetron sputtering and low-cost spray pyrolysis. The morphological characteristics of the films were carried out using high magnification optical microscopy and atomic force microscopy (AFM). Optical and electrical characterization was carried out by optical absorbance/transmittance, van der Pauw, current-voltage (I-V), and Hall effect measurements. The results are presented in this paper. 相似文献