ba sr tio3 ferroelectric thin films for integrated optics
Preparation and characterization of ferroelectric thin films for tunable and pyroelectric applications
... required for the successful integration of specific thin films into these devices Being one of the important prototypes of perovskite ferroelectrics, BaTiO3 and its Asite doped (Ba1 -xSrx )TiO3 (BST) thin ... associated with thin films are thought to have significant effects [21-23] Studies on ferroelectric thin films are therefore complicated The performance of a specific ferroelectric thin film is ... the B-site doped BaTiO3, i.e., Ba( Ti1-xSnx)O3 (BTS) thin films The effects of stress and microstructure on the tunable properties of BTS thin films have been studied, where the films were prepared...
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Báo cáo hóa học: " Electrospray deposition of polymer thin films for organic light-emitting diodes" pot
... limitations and drawbacks prevent OLEDs from being applicable to large-area device fabrication Much effort has been made for solution process development that can form nanoscale -thin organic films with ... process for patterning, multilayer stacking, and continuous processing of organic thin films Experimental details For PLED fabrication, we used a blended solution of poly(N-vinyl carbazole) [PVK], ... Instruments, Santa Barbara, CA, USA), respectively Results and discussion In electrospray deposition, it is critical to choose proper solvents to make fine droplets and uniform thin films Evaporation...
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Báo cáo hóa học: "Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows" pdf
... Table Processing conditions used for depositing the VO2 films W- and Mo-doped films Nb-doped films Base pressure (mbar) × 10-5 × 10-5 -3 × 10-3 Work pressure (mbar) × 10 Oxygen/argon ratio (%) ... 31:1000 doi:10.1186/1556-276X-6-301 Cite this article as: Batista et al.: Synthesis and characterization of VO2based thermochromic thin films for energy-efficient windows Nanoscale Research Letters ... achieved for Mo-doped and Nb-doped films, respectively The transition temperature (Tt) obtained for the pure VO2 film prepared by pulsed-DC sputtering was 59°C, which is lower than that obtained for...
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Báo cáo hóa học: " Pd Nanoparticles and Thin Films for Room Temperature Hydrogen Sensor" potx
... 2008), p 1967 15 F Wu, J.E Morris, Thin Solid Films 246, 17 (1994) 16 Y.-T Cheng, Y Li, D Lisi, W.M Wang, Sens Actuators B: Chem 30, 11 (1996) 17 A Barr, Thin Solid Films 41, 217 (1977) 18 T Xu, M.P ... typical X-ray diffraction patterns (XRD) for the sputtered Pd thin films Film thickness of 150 nm was same for sputtered thin films used for hydrogen sensing Grain size in the films was observed to ... X-ray diffraction data and given in our previous article [22] Sputtering Deposition of Pd Thin Films Palladium thin films were prepared by DC-magnetron sputtering system on oxidized silicon substrate...
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High tc superconductor, ferroelectric thin films and microwave devices
... CHAPTER 6: FERROELECTRIC THIN FILMS AND MULTILAYERS 98 121 6.1 Barium strontium titanate ferroelectric thin films 121 6.2 Ba0 . 1Sr0 . 9TiO3 thin films 124 6.2.1 Preparation of Ba0 . 1Sr0 . 9TiO3 target ... 6.2.2 Preparation of Ba0 . 1Sr0 . 9TiO3 thin films 126 6.2.3 Crystallinity of the Ba0 . 1Sr0 . 9TiO3 thin films 127 6.2.4 129 6.2.5 6.3 Surface morphology of the Ba0 . 1Sr0 . 9TiO3 thin films Microwave permittivity ... YBa2Cu3O7-δ (YBCO) thin films, ferroelectric Ba0 . 1Sr0 . 9TiO3 thin films and their applications in passive microwave devices YBCO, Ba0 . 1Sr0 . 9TiO3 and multilayer YBCO /Ba0 . 1Sr0 . 9TiO3 thin films were fabricated...
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Perovskite ferroelectric thin films prepared from polymer modified chemical solution deposition
... 1: Introduction 1.3 Processing of ferroelectric thin films 1.3.1 Deposition technologies for ferroelectric thin films The research on ferroelectric ceramic thin films began in the early 1980s and ... Applications of ferroelectric thin films Ferroelectric thin films play an increasingly important role with the technology advancement and are expected to be of use in many fields: • Ferroelectric films ... loop as shown in Figure 1.1 Many ferroelectrics have a perovskite type structure, such as barium titanate (BaTiO3), strontium titanate (SrTiO3), lead titanate (PbTiO3), lead zirconate titanate...
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A study of a fe2o3 thin films for the oxygen evolution reaction in water photolysis
... α-Fe2O3 thin films The synthesis of α-Fe2O3 thin films by a two-step process comprising the electrodeposition of thin iron films and the calcination of the iron films in air at 650℃ to form hematite ... 2θ (degrees) Fig 3.1 XRD patterns of (a) as-deposited iron thin films, (b) α-Fe2O3 thin films obtained from the as-deposited iron thin films after two hours of calcination in air at 650 oC (c) ... film formed by calcining the as-deposited iron thin film in air for two hours at 650oC, (c) and (d) the top views of the α-Fe2O3 thin film The photocurrent density of the α-Fe2O3 thin film for...
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Preparation of oriented molybdenum disulfide thin films for photoelectrochemical energy havesting applications
... for 1h for times to remove the excess lithium ions in the form of LiOH Finally, the suspension was centrifuged at 3000rpm for 0.5h for 3-4 times to remove the thicker materials MoS2 thin films ... UV-Vis absorbance of the MoS thin films of different thicknesses deposited on quartz and annealed in an argon environment at 300 ˚C The inset shows the absorbance dependence on MoS thickness for each ... of LTMDs in organic solvents Furthermore, atomically thin films of LTMDs can be synthesized by several other methods For instance, MoS2 thin films were successfully synthesized by annealing (NH4...
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Heterostructured pb(zr,ti)o3 (bi,nd)4ti3o12 ferroelectric thin films
... bilayered films (right), before and after 1010 cycles of polarization switching 136 XV CHAPTER FERROELECTRIC THIN FILMS FERROELECTRIC THIN FILMS CHAPTER FERROELECTRIC THIN FILMS Ferroelectricity, ... matching between electrode and ferroelectric film [e.g SrRuO3 (SRO) electrode in BaxSr1-xTiO3 (BST) capacitor] helps to eliminate the interfacial defects FERROELECTRIC THIN FILMS and additional states ... wafer Presently, BaxSr1-xTiO3 film capacitor is one of the top contenders for such application [7] On the other hand, ferroelectric thin films are being extensively studied for their technological...
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Ion beam writing and modification for integrated optics
... Microresonators in Lithium niobate 5.2.1 Review on Microresonators in Lithium niobate 5.2.2 Production of thin slabs in lithium niobate 5.2.3 Microdisk resonator in lithium niobate 5.3 Microresonators ... optical microresonators based on whispering gallery mode resonators in polymer The microresonators are integrated with optical waveguides and doped with laser dyes for integrated optics applications ... in this section 2.6.1 Optical waveguides Any integrated optical circuit requires basic components like waveguides for the transfer of information within the chip Optical waveguides have been fabricated...
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spin-coated thin films of sio2–wo3 composites for detection
... oxide-based sensor for nitrogen oxides, J Electrochem Soc 141 (1994) 2207 – 2210 [4] G Sberveglieri, G Faglia, S Groppelli, P Nelli, Methods for the preparation of NO, NO2 and H2 sensors based ... (1997) 141–146 Fig Normalized resistance vs concentration correlations in a log–log scale for WO3-based thin films (350°C) and sintered block (300°C) 145 Fig Short-term stability of electrical resistance ... Sberveglieri, Sub-ppm NO2 sensors based on nanosized thin films of titanium-tungsten oxides, Sensors and Actuators B 31 (1996) 89 – 92 [10] N Yamazoe, N Miura, Some basic aspects of semiconductor...
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SOL-GEL TECHNOLOGY FOR THIN FILMS, FIBERS, PREFORMS, ELECTRONICS, AND SPECIALTY SHAPES potx
... Opto-Electronic Films Magnetic Films Barrier Films Sulfide Films Glassy Thick Films Unsupported Glass Films New Oxide-Based Gel Films Organic Modified Silicate Films Scuff ... are largely in the area of thin films These films have been developed for optical, mechanical and electrical applications About one-third of this book covers thin films The second area where ... Cataloging-in-Publication Data Sol-Gel technology for thin films, fibers, preforms, electronics, and speciality shapes Bibliography: p Includes index Ceramic materials Glass fibers Thin films Colloids I Klein, Lisa...
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functional thin films and nanostructures for sensors. synthesis, physics, and applications
... electrochromic, or UV material for their use as functional thin films in optics Photonic crystals contain a variety of functional thin films; they require processing of thin films under very stringent ... respond? J Fortin GE Global Research Center Research Circle, KW C314, Niskayuna, NY12309 e-mail: fortinje@research.ge.com A Zribi and J Fortin (eds.), Functional Thin Films and Nanostructures for Sensors, ... Functional Thin Films and Nanostructures in Gas Sensing Audrey Nelson 85 Chemical Sensors: New Ideas for the Mature Field Radislav A Potyrailo 103 Applications of Functional Thin Films for...
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Báo cáo hóa học: " Ferroelectric properties of PZT/BFO multilayer thin films prepared using the sol-gel method" ppt
... PZT(52/48) thin films show a single peak for each diffraction angle In addition, XRD patterns of BFO thin films show a single peak at 2θ = 22.5° and 46° However, all PZT/BFO multilayer thin films ... coating-and-heating procedure was repeated several times to form the multilayer thin films All PZT/BFO multilayer thin films show a void-free, uniform grain structure without the presence of rosette ... on the PZT films under the same conditions and sintered at 873 K for 10 to form the second BFO layer This procedure was repeated several times, fabricating BFO/PZT multilayer thin films The crystalline...
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Báo cáo hóa học: " Nano-embossing technology on ferroelectric thin film Pb(Zr0.3,Ti0.7)O3 for multi-bit storage application" potx
... during the fatigue in ferroelectric thin films Appl Phys Lett 2006, 89:032906-032906 21 Jiang AQ, Lin YY, Tang TA: Charge injection and polarization fatigue in ferroelectric thin films J Appl Phys ... embossed and un-embossed PZT ferroelectric films were performed using a Radiant Technologies Precision Material Analyzer with a triangular wave form at kHz after forming Au/Cr electrode pads ... excellent ferroelectricity property of the embossed regions and demonstrates that two distinct coercive voltages can be generated by a one-step embossing process on ferroelectric thin films We...
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Báo cáo hóa học: " Sol–Gel and Thermally Evaporated Nanostructured Thin ZnO Films for Photocatalytic Degradation of " doc
... degradation of 2,4,6-TCP The formed intermediates were determined and the degradation mechanism was discussed Experimental Work ZnO Thin Films by Thermal Evaporation Thin films of Zn were thermally ... starting materials and good chemical homogeneity of the product Therefore, sol–gel methods are very convenient for the preparation of thin films of high surface area amorphous oxide materials [24] Among ... 550 °C for h, in order to grow thin zinc oxide films on the glass substrate Zn metal with high purity (99.9%) was used as a target and microscopic glass slide was used as a substrate ZnO Thin Film...
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Growth and characterization of nickel oxide thin films and nanostructures for novel device applications
... Experimental Details .29 Growth of Thin Films and Nanowires 29 3.1.1 Sputtering for thin film growth 29 3.1.2 Chemical bath deposition for porous film growth 30 3.1.3 Anodization, ... structure for optimizing the device performance Additionally, NiO thin films fabricated by thermal oxidation of evaporated Ni film are also characterized for comparison with the sputtered films 2.1.2 ... 29 3.1.2 Chemical bath deposition for porous film growth Porous NiO thin films fabricated by chemical bath deposition (CBD) possess a larger surface area (because of the non-uniform surface topography)...
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Tribological studies of ultra thin films at head media interface for magnetic data storage systems
... protective coatings films, DLC films have shown promising results to be used as a candidate for coating magnetic tape recording heads Among different types of DLC films, an ultra -thin tetrahedral ... made it a potential material of choice for protecting magnetic heads in tape drives However, the serious drawback of ta-C coatings, like for all other DLC films, is their poor durability and adhesion ... ta-C overcoat was developed by means of bombardment of a thin TiN film with C+ ions Mechanical and tribological tests were performed to investigate the performance of the developed coating Chemical...
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