Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Growth Optimisation And Characterisation Of Pulsed Laser Deposited Nd Based High Temperature Superconducting Thin Films For Device Applications
Download Growth Optimisation And Characterisation Of Pulsed Laser Deposited Nd Based High Temperature Superconducting Thin Films For Device Applications full books in PDF, epub, and Kindle. Read online Growth Optimisation And Characterisation Of Pulsed Laser Deposited Nd Based High Temperature Superconducting Thin Films For Device Applications ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Growth, Optimisation and Characterisation of Pulsed Laser Deposited Nd-based High Temperature Superconducting Thin Films for Device Applications by : Ratnakar Palai
Download or read book Growth, Optimisation and Characterisation of Pulsed Laser Deposited Nd-based High Temperature Superconducting Thin Films for Device Applications written by Ratnakar Palai and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Tc Superconductors by : J. Dumas
Download or read book High Tc Superconductors written by J. Dumas and published by Elsevier. This book was released on 1993-05-05 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wide range of progress in materials development [single crystals, ceramics, thin films, wire and tapes] is reported in the 169 papers in this volume. The main focus of the papers is in attaining a better understanding of the relationship between microstructure and electrical properties. Invited papers cover topics such as the effects of substitution and doping; multilayers; nanostructure characterisation; electric field effects in High Tc Superconductors [HTS]; surface stability; critical currents; flux pinning and magnetooptic imaging of flux patterns; effects of irradiation induced defects; properties and preparation of materials; microwave properties and electronic devices. A clearly broadened basis for understanding processes and mechanisms in [HTS] is portrayed. Appreciable progress has been achieved in the reproducible manufacturing of high quality materials supported by very efficient methods in microstructural analysis. This essential improvement is reflected in the increased number of practical devices encouraging the use of HTS in applications for electronics and power engineering, all of which are reviewed in depth in this work.
Book Synopsis Growth and Structure of High Temperature Superconducting Thin Films by : V. S. Achutharaman
Download or read book Growth and Structure of High Temperature Superconducting Thin Films written by V. S. Achutharaman and published by . This book was released on 1993 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pulsed Laser Deposition of Eu-doped Multilayer Thin Films for Spectral Storage Applications by : Francisco Javier Bezares
Download or read book Pulsed Laser Deposition of Eu-doped Multilayer Thin Films for Spectral Storage Applications written by Francisco Javier Bezares and published by . This book was released on 2010 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis studies different Eu optical centers in MgS:Eu and CaS:Eu thin films produced by Chemically Controlled Pulse Laser Deposition (CCPLD) and evaluates their suitability for the development of spectral storage devices of the future. The produced thin films consist of one or more optically active layer(s), MgS:Eu, CaS:Eu or a similar material, and a corresponding ZnS capping layer that functions as a protecting barrier for the other layers and preserves their composition and integrity. Given that the synthesis of the materials used to produce the multilayer structures in this work proved a great challenge, careful attention was given to the optimization of all fabrication parameters. Mass Spectrometry was used during the deposition of the thin films and the data obtained resulted on improvements and optimization of the deposition process. Scanning electron microscopy studies of these thin films were conducted to study degradation upon long-term storage. Microscopy results show that the morphology of the produced thin films is correlated to the growth environment during deposition and deterioration of the deposited materials could be initiated by nano-gaps and cracks in the capping layer of the thin films. In addition to optical centers in MgS:Eu and CaS:Eu, new centers were created by changing the thin film growth environment inside a hi-vacuum chamber, modifying the composition of the ablation target material, or both. For example, introducing O2, or alternatively HCl, inside the CCPLD chamber while producing MgS:Eu thin films results in the formation of impurity associated centers across lattice sites throughout the deposited structures. In another method of impurity doping studied, Cl- and Na+ were introduced into the MgS:Eu and CaS:Eu lattices by mixing trace amounts of the impurity ions into these materials in polycrystalline form and making this mixture a deposition target by hi-pressure cold compression technique. The introduction of these impurity ions will alter the crystal field environment around the Eu ions thus creating new optical centers with a shift in energy of their characteristic Zero Phonon Line. After extensive characterization of the optical properties of the thin films produced, laser-induced fluorescence spectroscopy and absorption spectroscopy measurements confirm that they are suitable candidates to be used in conjunction with power-gated spectral holeburning technique and could potentially provide ultrahigh, terabits per square inch, storage densities.
Book Synopsis Growth of Semiconductor Thin Films by Pulsed Laser Deposition by : Yilu Li
Download or read book Growth of Semiconductor Thin Films by Pulsed Laser Deposition written by Yilu Li and published by . This book was released on 2016 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulsed ultraviolet light from a XeF excimer laser was used to grow thin films of zinc oxide and tin dioxide on (111) p-type silicon wafers within a versatile high vacuum laser deposition system. This pulsed laser deposition system was self-designed and self-built. Parameters such as pressure, target temperature, and distance from the target to the substrate can be adjusted in the system. Scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction spectroscopy, Raman spectroscopy and ellipsometry were used to analyze the structures and properties of ZnO and SnO2 thin films. The critical temperature required to fabricate a crystalline ZnO thin film by pulsed laser deposition was found and has been confirmed. For the SnO2 thin film, the critical temperature required to generate a crystalline structure could not be found because of the temperature limit of the substrate heater used in the experiment. In SnO2 thin films, thermal annealing has been used to convert into crystalline structure with (110), (101) and (211) orientations. After fabricating the amorphous SnO2 thin films, they were put into an oven with specific temperatures to anneal them. The minimum annealing temperature range was found for converting the amorphous SnO2 thin films into SnO2 thin films with a crystalline structure. Thermal annealing has also been applied to some amorphous ZnO thin films which were fabricated under the critical temperature required to produce crystalline ZnO thin films. The minimum annealing temperature range for amorphous ZnO thin films was found and only one orientation (002) shown after annealing. Laser annealing technology has also been applied for converting both amorphous ZnO and SnO2 thin films, and results show that this method was not well suited for this attempt. ZnO thin films and SnO2 thin films with a crystalline structure have inportant widely used in industry, for example, application in devices such as solar cells and UV or blue-light-emitting devices. The aim of this research is to help improving the manufacturing process of ZnO and SnO2 thin films.
Book Synopsis Pulsed Laser Deposition of Thin Films by : Robert Eason
Download or read book Pulsed Laser Deposition of Thin Films written by Robert Eason and published by John Wiley & Sons. This book was released on 2007-12-14 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by major contributors to the field, this text summarizes current or newly emerging pulsed laser deposition application areas. It spans the field of optical devices, electronic materials, sensors and actuators, biomaterials, and organic polymers. Every scientist, technologist and development engineer who has a need to grow and pattern, to apply and use thin film materials will regard this book as a must-have resource.
Book Synopsis Pulsed Laser Deposition of Bi[sub]2[/sub]Te[sub]3[/sub] Based Thermoelectric Thin Films by :
Download or read book Pulsed Laser Deposition of Bi[sub]2[/sub]Te[sub]3[/sub] Based Thermoelectric Thin Films written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin film thermoelectric coolers offer several advantages that include reliability and integration with device processing. Successful thin film thermoelectric cooling requires integration with thin film diamond or aluminum nitride heat spreaders and the device wafers. Numerous deposition techniques have been attempted previously including evaporation, flash evaporation, molecular beam epitaxy, chemical vapor deposition, and sputtering. In the case of thermoelectric thin films, a primary difficulty is maintaining stoichiometry. In the present effort, thin films of p-type Bi[subscript 0.5]Sb[subscript 1.5]Te3, n-type Bi2Te[subscript 2.7]Se[subscript 0.3] and n-type (Bi2]Te3)90(Sb2Te3)5(Sb2Se3)5 (with 0.13 wt.% SbI3) were deposited on mica and aluminum nitride substrates using Nd-YAG pulsed laser deposition. The film quality in terms of composition and crystal perfection was studied as a function of growth temperature. The films were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) for crystalline quality, and by scanning electron microscopy (SEM) for surface morphology. The films showed uniform thickness and high crystalline quality with a preferred (0 0 n) alignment with the substrates. The Seebeck coefficient, electrical resistivity and Hall mobility were measured and compared with the bulk properties. An improvement in the thermoelectric properties by reduction in laser induced particulates has been demonstrated by the use of lower incident laser energy. The thermoelectric characteristics of the films deposited on AlND Si substrates were found to be superior to those deposited on mica substrates. X-ray mapping and energy-dispersive-spectroscopy were performed to determine the composition and homogeneity of the thin films. The results showed that pulsed laser deposition has the ability to produce congruent transfer of the target composition to the thin.
Book Synopsis Study of Epitaxial Thin Films of Yba2cu3o7-[Delta] on Silicon with Different Buffer Layers by : Engang Fu
Download or read book Study of Epitaxial Thin Films of Yba2cu3o7-[Delta] on Silicon with Different Buffer Layers written by Engang Fu and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Study of Epitaxial Thin Films of YBa2Cu3O7-[delta] on Silicon With Different Buffer Layers" by Engang, Fu, 付恩剛, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled STUDY OF EPITAXIAL THIN FILMS OF YBa Cu O ON 2 3 7-δ SILICON WITH DIFFERENT BUFFER LAYERS submitted by Fu Engang for the degree of Master of Philosophy at The University of Hong Kong in August 2005 Silicon is the most widely used semiconductor in the microelectronic industry. Highly epitaxial thin films of YBa Cu O (YBCO) grown on Si wafers are of 2 3 7-δ special interest for development of superconductor/semiconductor hybrid microelectronic devices and circuits. However, severe interaction between Si and YBCO layer, large mismatch in their lattice constant, and strain due to different thermal expansion often degrade the crystallinity and superconductivity of the grown YBCO layers. In this study, yttria-stabilized zirconia (YSZ) and Eu CuO (ECO) 2 4 were introduced as double buffer layers to improve the growth and properties of the YBCO thin films grown on silicon. Preparation and characterization of epitaxial YBCO/ECO/YSZ/Si multilayer structures were studied. YBCO thin films and the double buffer layers of ECO/YSZ were deposited on the silicon (100) substrate by the pulsed laser deposition (PLD) method. Firstly, the YSZ thin layer was grown epitaxially on silicon (100) substrate to separate YBCO from the Si substrate. Effects of substrate temperature and operating gas pressure on the structure and surface roughness of YSZ thin film were examined and the optimum deposition parameters were determined based on experimental results and comprehensive analysis. X-Ray diffraction (XRD) patterns and rocking curve revealed an epitaxial growth with a perfect c-axis orientation. The YSZ thin films grown on silicon substrate have smooth surface, providing a base on which ECO and YBCO thin film can be grown epitaxially. To further improve the quality of YBCO films, an additional layer of ECO with very stable 214-T' crystal structure was inserted between YBCO and YSZ/Si. The influence of substrate temperature and oxygen gas pressure on the properties of ECO thin films grown on YSZ/Si were experimentally analyzed and the growth conditions were optimized. Finally, the epitaxial YBCO thin films were grown on silicon substrate with double buffer layers of ECO/YSZ. The influences of substrate temperature, oxygen gas pressure and different buffer layers on the properties of YBCO thin films were studied. It was found that the crystal structure, surface roughness and superconductivity of YBCO films could be significantly improved by adding such a double buffer of ECO/YSZ. The quality of the YBCO thin films has been significantly enhanced when compared with that grown on Si with a single YSZ buffer layer and with double buffer layers of Nd CuO (NCO)/YSZ. Such highly 2 4 epitaxial thin films of YBCO grown on silicon should be of great interest for various applications including high-frequency elements, millimeter-wave receivers, and superconducting quantum interference devices. DOI: 10.5353/th_b3637488 Subjects: Thin films Silicon Epitaxy
Book Synopsis Pulsed Laser Deposition of High Temperature Superconducting Thin Films for Squid Applications by : Robert M. Bowman
Download or read book Pulsed Laser Deposition of High Temperature Superconducting Thin Films for Squid Applications written by Robert M. Bowman and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation Into Controlling the Growth Modes of Ferroelectric Thin Films Using Pulsed Laser Deposition and RHEED. by :
Download or read book An Investigation Into Controlling the Growth Modes of Ferroelectric Thin Films Using Pulsed Laser Deposition and RHEED. written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin film ferroelectricss are widely considered for tunable microwave applications, the reduced small dimensions leading to low tuning voltages. The incipient ferroelectric strontium titanate is an ideal solution for tunable microwave devices, particularly in conjunction with high temperature superconductors. It has no spontaneous polarisation yet possesses a large permittivity at low temperatures that is sensitive to an electric field bias with relatively low loss. For such applications it is essential to use a low loss substrate such as magnesium oxide. In general, thin films have less favourable dielectric properties compared with their bulk counterparts due to differences in microstructure. strontium titanate films on MgO substrate prove difficult to grow due to the high lattice mismatch and issues connected with chemical incompatibility at the film/substrate interface. It has been shown here that it is possible to engineer the growth mode of this system, altering the strain and the defect concentration. These are both known factors influencing the dielectric properties of thin films. Reflection high energy electron diffraction (RHEED) in combination with interval pulsed laser deposition (PLD) has been used to achieve a two dimensional, layer-by-layer growth mode. Crucial to this was the deposition of a unit-cell thick titanium dioxide buffer layer on the surface, the deposition of which was also controlled by RHEED. The growth mode and microstructure of films grown using standard PLD with and without the buffer layer and films grown by interval PLD with and without the buffer layer have been compared by analysis of the RHEED data and transmission electron microscopy. This is the first time layer-by-layer growth has been achieved in this highly-mismatched epitaxial systems. The results point the way towards control of defects in oxide thin films from which microstructure-property relationships may be more clearly determined.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Current Research in Thin Film Deposition by : Ross Birney
Download or read book Current Research in Thin Film Deposition written by Ross Birney and published by MDPI. This book was released on 2021-06-03 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, thin films are near-ubiquitous and are utilised in a very wide range of industrially and scientifically important areas. These include familiar everyday instances such as anti-reflective coatings on ophthalmic lenses, smartphone optics, photovoltaics, decorative, and tool coatings. A range of somewhat more exotic applications also exists, such as astronomical instrumentation (e.g., ultra-low loss dielectric mirrors and beam splitters in gravitational wave detectors, such as laser interferometer gravitational-wave observatory (LIGO)), gas sensing, medical devices and implants, and accelerator coatings (e.g., coatings for the large hadron collider (LHC), and compact linear collider (CLIC) experiments at European organization for nuclear research (CERN)). This Special Issue will provide a platform for researchers working in any area within this highly diverse field to share and exchange their latest research findings. The Special Issue contains novel studies encompassing material characterisation techniques, a range of thin-film coating deposition processes and applications of such technology.
Book Synopsis The Pulsed Laser Deposition of High Temperature Superconducting Thin Films by : Kenneth Scott
Download or read book The Pulsed Laser Deposition of High Temperature Superconducting Thin Films written by Kenneth Scott and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser deposited YBa 2 Cu 3 O 7-x thin films and heterostructures by : Göran Brorsson
Download or read book Laser deposited YBa 2 Cu 3 O 7-x thin films and heterostructures written by Göran Brorsson and published by . This book was released on 1993 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Growth, Modeling and Device Implementation of Pulsed Laser Deposited Thin Films by : Md. Hamidur Rahman
Download or read book Growth, Modeling and Device Implementation of Pulsed Laser Deposited Thin Films written by Md. Hamidur Rahman and published by . This book was released on 1998 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoemission Studies of Thin Films Grown by Pulsed Laser Deposition by : Mike Abrecht
Download or read book Photoemission Studies of Thin Films Grown by Pulsed Laser Deposition written by Mike Abrecht and published by . This book was released on 2003 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Laser Micro- and Nano-Engineering by : KOJI SUGIOKA.
Download or read book Handbook of Laser Micro- and Nano-Engineering written by KOJI SUGIOKA. and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook provides a comprehensive review of the entire field of laser micro and nano processing, including not only a detailed introduction to individual laser processing techniques but also the fundamentals of laser-matter interaction and lasers, optics, equipment, diagnostics, as well as monitoring and measurement techniques for laser processing. Consisting of 11 sections, each composed of 4 to 6 chapters written by leading experts in the relevant field. Each main part of the handbook is supervised by its own part editor(s) so that high-quality content as well as completeness are assured. The book provides essential scientific and technical information to researchers and engineers already working in the field as well as students and young scientists planning to work in the area in the future. Lasers found application in materials processing practically since their invention in 1960, and are currently used widely in manufacturing. The main driving force behind this fact is that the lasers can provide unique solutions in material processing with high quality, high efficiency, high flexibility, high resolution, versatility and low environmental load. Macro-processing based on thermal process using infrared lasers such as CO2 lasers has been the mainstream in the early stages, while research and development of micro- and nano-processing are becoming increasingly more active as short wavelength and/or short pulse width lasers have been developed. In particular, recent advances in ultrafast lasers have opened up a new avenue to laser material processing due to the capabilities of ultrahigh precision micro- and nanofabrication of diverse materials. This handbook is the first book covering the basics, the state-of-the-art and important applications of the dynamic and rapidly expanding discipline of laser micro- and nanoengineering. This comprehensive source makes readers familiar with a broad spectrum of approaches to solve all relevant problems in science and technology. This handbook is the ultimate desk reference for all people working in the field.
![Download Pulsed Laser Deposition of Bi[sub]2[/sub]Te[sub]3[/sub] Based Thermoelectric Thin Films PDF Online Free](https://books.google.com/books/content/images/frontcover/fmiWAQAACAAJ?fife=w200-h370)
![Download Study of Epitaxial Thin Films of Yba2cu3o7-[Delta] on Silicon with Different Buffer Layers PDF Online Free](https://books.google.com/books/content/images/frontcover/D4BcAQAACAAJ?fife=w200-h370)
