Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 41 for “"Pulsed Laser Deposition (PLD)"”.
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Structure and properties of transparent conductive ZnO films grown by pulsed laser deposition (PLD)
… thin films were grown on glass substrates by the pulsed laser deposition (PLD) technique using a KrF excimer laser with wavelength of 248nm. The influence of ambient oxygen pressure, substrate temperature, laser fluence, the number of pulses and doping with silicon was investigated. The …
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Femtosecond pulsed laser deposition
… investigates two variations of the conventional pulsed laser deposition (PLD) technique. The first technique is femtosecond PLD, whereby the laser used to ablate the target has a significantly higher peak intensity and shorter pulse duration as compared to conventional nanosecond lasers more …
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Power Electronics Based on Ultrawide Bandgap Semiconductors: from Material Engineering to Device Applications
… The BN layer is directly grown on the β-Ga2O3 by pulsed laser deposition (PLD). The presence of a ~2.8 nm BN layer is confirmed by a series of techniques, including X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and high-resolution transmission electron microscopy (HRTEM). The MIS …
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Templated Multiferroic Nanocomposites by Ion-Lithography
… BFO—CFO nanocomposite is synthesized by pulsed laser deposition (PLD). Nucleation mechanism of CFO on patterned STO substrates together with atomic characterization is discussed. Last, a customized micro-magnetics module in COMOL Multiphysics is built based on the weak formulation of …
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Produção, caracterização e avaliação in vitro de filmes finos de vidro niobo-fosfato por deposição a laser pulsado
… (CaF2-CaONb2O5-P2O5) films were deposited by pulsed laser deposition (PLD) on Ti substrates aiming to enhance its bioactivity and osseointegration. Samples were analyzed by SEM, EDS, XPS, XRD, XRF, AFM, profilometry, scratch test, focal contact and cell proliferation and differentiation. In …
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Verification of d-wave pairing symmetry by microwave intermodulation distortion measurements in yttrium barium copper oxide
… intermodulation distortion (IMD) in high quality pulsed laser deposition (PLD) Yttrium Barium Copper Oxide (YBCO) on LaAlO3 substrate. A low-temperature (T < 30 K) increase in IMD is the observation of an upturn of the nonlinear coefficient of the quadratic field dependence of the penetration …
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Nonlinear optical properties of nano structures
… clusters are reported in this dissertation. The Pulsed Laser Deposition (PLD) technique is first described. Here we were investigating the effect of surface modification of nano silicon clusters by incorporating various gases (142, Ar, He) during the deposition process. Linear and nonlinear …
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Band Offset Measurements of ε-(InxGa1-x)2O3/AlN using X-ray Photoelectron Spectroscopy
… of ε-(In0.15Ga0.85)2O3 on AlN substrates via pulsed laser deposition (PLD), along with an investigation of the resulting valence and conduction band offsets at the heterointerface. Through PLD growth optimization experiments, it was observed that moderate temperature (550 ℃), high oxygen …
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Ultra-high Mobility 2DEG Heterostructure Fabricate by Oxide Molecular Beam Epitaxy for Device Application
… typically achieved through epitaxial growth by Pulsed Laser Deposition (PLD), with a lack of potential in large-area growth. The carrier performance is also limited by the crystalline quality control by PLD. This study reports a systematic fabrication and application of LaAlO3/SrTiO3 …
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Characterization of Ferroelectric Films by Spectroscopic Ellipsometry
… of multi-layer models for films produced by pulsed laser deposition (PLD), metal-organic chemical vapor decomposition (MOCVD), and metal-organic deposition (MOD). VASE was used to estimated the volume percentage of second phase Bi2O3 in SBT thin films made by MOD. Since Bi₂O₃ was 10 orders of …
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Barium Titanate-Based Magnetoelectric Nanocomposites
… and BTO single phase films were prepared by pulsed laser deposition (PLD) and sol-gel process. BTO-ferrite nanocomposites were grown by solid state reaction. Furthermore, BTO-metal nanostructures were also synthesized by solid state reaction under hydrogen gas which gave us a great …
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Vanadium dioxide thermochromic thin films correlation between microstructure, electrical and optical properties
… successfully prepared using two physical vapour deposition methods namely Pulsed Laser Deposition (PLD) and Inverted Cylindrical Magnetron Sputtering (ICMS). We used these two techniques in order to comparatively study the effect of deposition temperature on VO2 thin films microstructure, …
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Pulsed laser deposition of thick multilayer garnet crystal films for waveguide laser devices
… aim of this project was to use the technique of pulsed laser deposition (PLD) to fabricate thick multilayered garnet crystal planar waveguides with rare-earth ion doped cores for use as planar waveguide laser devices. Planar waveguides are of interest because of the implications of their …
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Electrochemical lithiation and delithiation for control of magnetic properties of nanoscale transition metal oxides
… work, changes in magnetization and structure of pulsed laser deposition (PLD)-grown Fey's (magnetite) thin films, Fe3O4 nanoparticles, and CrO2 nanoparticles have been investigated upon electrochemical lithiation. The reasonable electrical conductivity of magnetite opens the possibility of …
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Comparative Investigation of LIBS Spectra and Crater Morphology During Laser Ablation of Eutectic BiSn Alloys
Laser-based methods such as pulsed laser deposition (PLD) that are used for fabricating structural and functional materials are ripe for dramatic improvement. However, because laser–material interactions are dependent on detailed and largely unknown processes that occur during the laser ablation, …
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An investigation into controlling the growth modes of ferroelectric thin films using pulsed laser deposition and RHEED
… 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 …
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Magneto-optical and multiferroic oxide thin films, integrated nonreciprocal photonic devices and multiferroic memory devices
… of studies on complex oxide growth using pulsed laser deposition (PLD) and structural, magnetic, magneto-optical and ferroelectric characterization. We first focused on enhancing integrated magneto-optical isolator performance by improving the growth method of magneto-optical Ce1Y2Fe5O12 …
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Magnetoelectric Coupling in BaTiO3-BiFeO3 Multilayers: Growth Optimization and Characterization
… by our group, BTO-BFO multilayers deposited by pulsed laser deposition (PLD) showed a ME coupling coefficient αME enhanced by one order of magnitude, when compared to single-layers of the intrinsic multiferroic BFO. However, the mechanism of ME coupling in such heterostructures is poorly …
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Pulsed Laser Deposited Iron Garnet Thin Films for Spintronics
… garnet [GGG, (111) orientation] substrates using pulsed laser deposition (PLD). Sc, a nonmagnetic cation, occupies up to 40% of the octahedral Fe sites. Anomalous Hall effect-like spin Hall magnetoresistance measurements were performed to determine the effect of scandium content on spin mixing …
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Template Directed Growth of Nb doped SrTiO₃ using Pulsed Laser Deposition
… which were then filled with Nb:STO using Pulsed Laser Deposition (PLD) at room temperature. This technique produced nanowires and nanodots with critical dimensions below 100 nm, and a yield of approximately 95%. In addition to scanning electron microscopy and atomic force microscopy …
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