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Showing 1 to 20 of 83 for “"Oxide thin films"”.
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Sol-gel derived tantalum oxide thin films
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1987.
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Semiconducting tin oxide thin films on glass
Stannic oxide films on glass, deposited by th ·spray technique, are found to be n-type semiconductors. The large carrier concentration (~10¹⁹/cm³) of these films causes the donor level to blend into an impurity band. Annealing the stannic oxide film results in a diffusion of glass components on the …
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Magnetoelectric Properties of Epitaxial Spinel Oxide Thin Films
… characterization of high-quality FVO epitaxial thin films on perovskite SrTiO3 substrates. The magnetic and electrical properties of FVO films are presented as well as the characterization of magnetoelectric coupling of the material. Secondly, another unique spinel, Cobalt Chromite, CoCr2O4 …
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Magnetic and Transport Properties of Oxide Thin Films
… of transition metal and rare earth doped oxides, particularly SnO2 and HfO2 thin films. Cr- and Fe-doped SnO2 films were deposited on Al2O3 substrates by pulsed-laser deposition. Xray- diffraction patterns (XRD) show that the films have rutile structure and grow epitaxially along the (101) …
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Electrodeposition and Characterization of Copper Oxide Thin Films
Cuprous oxide is a low cost semiconductor with applications in solar energy conversion and oxygen sensing devices. Fabrication of these films by electrodeposition offers a simple and cost effective method for producing large-area thin films in mass quantities. An interesting phenomenon associated …
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Growth and Characterization of Epitaxial Oxide Thin Films
Epitaxial oxide thin films are used in many technologically important device applications. This work deals with the deposition and characterization of epitaxial WO3 and SrBi2Ta2O9 (SBT) thin films on single crystal oxide substrates. WO3 thin films were chosen as a subject of study because of recent …
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Structure and properties of copper oxide thin films
Copper oxide thin films were prepared on glass substrates by radio frequency sputtering of a sintered CuO target in various argon-oxygen atmospheres. Films sputtered in pure argon consisted of both CuO and Cu₂O due to partial dissociation of CuO during deposition. Sputtering in 10% and 50% oxygen …
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Solar radiation control by pyrolytic oxide thin films
… many new demands on materials, especially oxide thin films. A few of these new applications include solar collectors, solar reflectors, and thermal transparent insulation. The engineer must fully understand how oxide thin films optically behave and what mechanisms govern this behavior …
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Chemical vapour deposition of complex ferroic oxide thin films
… deposition (CVD) route for the fabrication of oxide ferroelectrics. A versatile layer-by-layer growth mode was developed to prepare naturally super-latticed bismuth based materials belonging to the Aurivillius phase family, with which good control over composition and crystal structure was …
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Properties and sensor performance of zinc oxide thin films
Reactively sputtered ZnO thin film gas sensors were fabricated onto Si wafers. The atmosphere dependent electrical response of the ZnO micro arrays was examined. The effects of processing conditions on the properties and sensor performance of ZnO films were investigated. Using AFM, SEM, XRD and …
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Interfacial Magnetism and Exchange Bias in Metal Oxide Thin Films
… thesis focuses on the investigations of magnetic thin film structure of cubic and perovskite transition metal oxide magnets, particularly when two different magnetic orderings are competing at such interface. The goal is to understand the various effects of an interfaces that exert on the …
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Synthesis, characterization, and photocatalytic activity of tantalum oxide thin films
… gap provides a possible alternative. Ta2O5 thin films were synthesized using a sol-gel method and deposited by dip-coating and spin-coating. The thicknesses of the films ranged from 8 nm to 230 nm and were tested to find an optimum thickness based on the quantum efficiency. The photoactivity …
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Magneto-optical oxide thin films and integrated nonreciprocal photonic devices
… devices on silicon. Several magneto-optical oxide thin films including epitaxial magnetically doped perovskites and polycrystalline garnets were demonstrated with high figure of merit at communication wavelengths, while epitaxial orthoferrite films were understood to have challenges in …
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Ion beam assisted deposition of biaxially aligned oxide thin films
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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Defect engineering of cuprous oxide thin-films for photovoltaic applications
Thin-film solar cells are promising for renewable-energy applications due to their low material usage and inexpensive manufacturing potential, making them compatible with terawatts-level deployment. Cuprous oxide (Cu₂O) is an earthabundant semiconductor with desirable properties for light-absorbing …
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Laser processing of solution based antimony doped tin oxide thin films
Antimony doped Tin oxide (SnO2:Sb, or ATO) is of interest as an alternative to Indium Tin Oxide (ITO) for large area optoelectronic applications. There is a particular interest in the potential for solution based coatings based on nanoparticulate suspensions of SnO2:Sb. However, solution processed …
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INVESTIGATION OF THE STRUCTURAL PROPERTIES OF HAFNIUM ZIRCONIUM OXIDE THIN FILMS
Hafnium-zirconium oxide (HfxZr1-xO2)-based dielectrics have received an abundance of attention recently, holding promise for use in CMOS-compatible ferroelectric memory technology. Unlike in conventional ferroelectrics, ferroelectricity in HfxZr1-xO2 is retained in ultrathin films of only a few …
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Use of sol-gels in the application of ceramic oxide thin films
<p>Metal oxide sol-gels were produced through a controlled hydrolysis-condensation reaction of the metal alkoxide in alcohol using nitric acid as a catalyst. In obtaining sols of niobia, tantala, and titania, increasing either the water content or the system concentration increased the rate of …
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