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Showing 1 to 11 of 11 for “"tantalum pentoxide"”.
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Origins of Enhanced Dielectric Properties in Titania-Modified Tantalum Pentoxide Ceramics
Dense and homogeneous specimens enabled the first detailed investigation into the electrical properties of TiO2-modified H-Ta2O 5 ceramics. Specimens containing 8% TiO2 exhibited dielectric constant (K) values of ∼280 at 20°C with tan delta values ∼0.01, but undoped specimens had tan …
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Stress in ion-beam assisted silicon dioxide and tantalum pentoxide thin films
Ta205 and Si02 thin films, deposited at room temperature by ion-beam sputtering (IBS) and dual ion-beam sputtering (DIBS), and Si02 films, deposited by reactive e-beam evaporation and ion-assisted deposition, were studied. The energy (150-600 eV) and ion-to-atom arrival ratio (0.27-2.0) of …
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Preparations and Characterizations of Tantalum Pentoxide-Titanium Dioxide: Ceramics and Thin Films
A chemical-solution deposition method was used to integrate thin films of Ta2O5-TiO2 onto silicon substrates. Precursor solutions were successfully prepared using Ta(OEt)5 and Ti(OEt) 4 in ethanol. Solution stability was shown to be influenced by several factors, including, Rw ratio, additions of …
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Study of Transport Properties of Tantalum Pentoxide for High Temperature Thermal Management and Water Purification Systems
The convolution of heat and mass transfer with material properties is an important issue in the design and operation of many different engineering systems. Two semiconductor oxide systems based on Ta2O5, one a high temperature radiative thermal management system and the other a photocatalytic water …
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Investigation of nonlinear processes and device designs applicable to the creation of a compact, broadly tunable laser based on a tantalum pentoxide planar lightwave circuit platform
… on rib and ridge waveguides consisting of a tantalum pentoxide ( 2 5 Ta O ) core and silicon dioxide ( 2 SiO ) cladding materials. The simulated dispersion properties of such planar waveguides are presented. The experimental results on frequency tripling, SC generation and parametric effects …
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Optical absorption and anisotropy of refractory oxides fabricated by ion-assisted deposition and ion plating.
… of the class of high index refractory materials: Tantalum pentoxide and Titania are investigated. These materials are known to produce very high quality films. Ion plating of tantalum results in the extremely high quality films, but ion plating of titania results in films with absorption that is …
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Examining Tantalum-Based Photocatalysts for Photoinactivation of E. coli
… of E. coli. This work helped to determine if tantalum pentoxide (Ta2O5) and tantalum oxynitride (TaON) can photoinactivate E. coli (DH5-Alpha). The results support the extrapolation that these two tantalum-based oxides have the ability to photoinactivate E. coli, but quantification is arduous …
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Effects of Magnesium Reduction on the Structure and Electrical Properties of Tantalum Oxide Aerogels
… and commercialization of this technology. Tantalum pentoxide (Ta2O5) is stable under the oxidative potentials and acidic conditions of the ORR, but prior efforts have largely focused on carbon-Ta2O5-Pt catalysts which can still result in the degradation of the support. To develop a …
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Chemically modified Ta₂O₅ thin films for dynamic random access memory (DRAM) applications
… demonstrated that by chemically modifying the tantalum pentoxide matrix, significant improvements in its electrical properties can be achieved which would enable the fabrication of a reliable high-density memory device. In the present work, the effects of Al addition on Ta₂O₅ thin films were …