Index Catalog // ScholarsArchive@OSU

Tuning Functional Properties of Pyrochlore and Related Oxides via Cation and Anion Substitutions

Creator:: Giampaoli, Gabriella C. S.
Abstract:: Inorganic structures play an important role in materials due to their versatility and diversity. A complete understanding of the structure of a material is vital to enhance the creation of new materials that fill voids in research. The rational design of these compounds is driven by the exploitation of structure-property...
Resource Type:: Dissertation

Influence of surface conditioning on the ionization, breakdown, and tracking over solid dielectrics

Creator:: Wiedow, Carl Paul
Resource Type:: Dissertation

Vacuum evaporated dielectrics in MOS structures

Creator:: Delzer, Dennis Richard
Abstract:: Vacuum evaporated dielectrics for use in MOS structures were studied in this research project. Dielectric films were deposited on substrates by electron bombardment evaporation of sapphire and quartz source materials. These deposited films were studied using infrared spectroscopy, index of refraction, density, and dielectric constant measurements. Etching tests were also...
Resource Type:: Dissertation

Space-charge-limited currents in silicon using gold contacts

Creator:: Ede, Alan Winthrop
Abstract:: The theoretical characteristics of space-charge-limited currents in solids are reviewed, and a survey of suitable dielectric materials and experimental space-charge-limited devices is presented. The properties of the gold-silicon contact as used in space-charge-limited devices were experimentally investigated. It was found that the observed characteristics could be explained on the basis...
Resource Type:: Dissertation

Development of complex perovskite dielectric ceramics for high temperature capacitor applications

Creator:: Raengthon, Natthaphon
Abstract:: Dielectric ceramics designed for capacitor applications for use in extreme environments, such as high temperatures, high voltages, or high-pressure environments, are in great demand. Existing capacitor technology fails to perform within these extreme conditions or such environments. The development of new dielectric ceramic materials for high temperature capacitor applications is...
Resource Type:: Dissertation

Design, fabrication, and testing of inhomogeneous dielectrics

Creator:: Lim, Sungkyoo
Abstract:: In this thesis the concept of inhomogeneous dielectrics is demonstrated for various optical coating applications. Compositionally-varying silicon oxynitride (SiON) dielectric layers, with the refractive index varying as a function of position, are grown by computer-controlled plasma-enhanced chemical vapor deposition (PECVD) using silane, nitrogen, and nitrous oxide reactant gases. Compositionally graded...
Resource Type:: Dissertation

An Ising-like model to predict dielectric properties of the relaxor ferroelectric solid solution BaTiO3 - Bi(Zn1/2Ti1/2)O3, An Ising-like model to predict dielectric properties of the relaxor ferroelectric solid solution BaTiO₃ − Bi(Zn₁/₂Ti₁/₂)O₃

Creator:: Jackson, Dennis L.
Abstract:: We developed a model to investigate the dielectric properties of the BaTiO₃ − Bi(Zn₁/₂Ti₁/₂)O₃ (BT-BZT) solid solution, which is a relaxor ferroelectric and exhibits long range disorder. The model uses ab initio methods to determine all polarization states for every atomic configuration of 2 x 2 x 2 supercells of...
Resource Type:: Dissertation

New luminescent materials and high-performance solution-processed oxide thin films

Creator:: Jiang, Kai
Abstract:: Crystals of an incongruent-melting compound, Ba₃MgSi₂O₈, were grown by the flux method and its structure was determined by single crystal X-ray diffraction methods. Ba₃MgSi₂O₈ crystallizes in trigonal space group P-3[bar]m1 with a = 5.6123(3) Å, c = 7.2667(9) Å and Z = 1. Eu²⁺ ions prefer one crystallographic Ba site...
Resource Type:: Dissertation

Fabrication and geometrical characterization of metal and metal-dielectric composite periodic nanostructures

Creator:: Bhowmik, Siddhartha
Abstract:: Periodic metal and metal-dielectric composite nanostructures have been of interest from the field of plasmonics and metamaterial fabrication. In order to exploit the behavior of these unique materials in the visible region of the optical spectrum, these structures need to be significantly shorter than the wavelength of response, and hence...
Resource Type:: Dissertation

Effects of doping, cation stoichiometry, and the processing conditions on the dielectric properties of high-K CaCu₃Ti₄O₁₂ ceramics

Creator:: Kwon, Seunghwa
Abstract:: Since its discovery, the anomalous dielectric behavior of CaCu₃Ti₄O₁₂ (CCTO) has drawn a great deal of attention for many possible applications in electronic devices. The origin of the giant dielectric constant in CCTO was explained via an internal barrier layer capacitor model, and it has been reported that the dielectric...
Resource Type:: Dissertation

ScholarsArchive@OSU

Tuning Functional Properties of Pyrochlore and Related Oxides via Cation and Anion Substitutions

Influence of surface conditioning on the ionization, breakdown, and tracking over solid dielectrics

Vacuum evaporated dielectrics in MOS structures

Space-charge-limited currents in silicon using gold contacts

Development of complex perovskite dielectric ceramics for high temperature capacitor applications

Design, fabrication, and testing of inhomogeneous dielectrics

An Ising-like model to predict dielectric properties of the relaxor ferroelectric solid solution BaTiO3 - Bi(Zn1/2Ti1/2)O3, An Ising-like model to predict dielectric properties of the relaxor ferroelectric solid solution BaTiO₃ − Bi(Zn₁/₂Ti₁/₂)O₃

New luminescent materials and high-performance solution-processed oxide thin films

Fabrication and geometrical characterization of metal and metal-dielectric composite periodic nanostructures

Effects of doping, cation stoichiometry, and the processing conditions on the dielectric properties of high-K CaCu₃Ti₄O₁₂ ceramics

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