NDLTD logo NDLTD Union Catalog and Global ETD Search

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.

Results

Showing 1 to 13 of 13 for “"YBa2Cu3O7-x"”.

  1. YBa2Cu3O7-x thin films prepared by Chemical Solution Deposition

    Apetrii, ClaudiaTechnische Universität Dresden

    … followed by Wu et al. [4, 5] who showed that YBa2Cu3O7−x (YBCO) becomes superconducting (92K) well above the boiling point of nitrogen (77K) created a great excitement in superconductivity research. Potential applications of high Tc-superconductors require large critical currents and …

    qucosa-diss

  2. Intergranular Phases in Cyclically Annealed YBa2Cu3O7-x and Their Implications for Critical Current Densities

    Clarke, Andrew Peter

    utahstate Repository record

  3. Phase Relations in the YBa2Cu3O7-x - SiO2 System and the Impact on Superconducting Fibers

    Heyl, Hanna VerenaVirginia Tech2019

    … and analyses of the phase relations in the YBa2Cu3O7-x (YBCO)-SiO2 system at elevated temperatures. In this regard, a rigorous characterization study of the reaction phases within YBCO glass fibers, heat-treated YBCO+SiO2 pellets, rapid thermally annealed YBCO+SiO2 rods and rapid thermally …

    vt Repository record

  4. Enhanced High-Field Flux Pinning in YBa2Cu3O7-x Thin Films Through Engineering of Ba2YTaO6 Artificial Pinning Centres

    Bedford, ThomasUniversity of Cambridge2023

    … based on the high-temperature superconductor YBa2Cu3O7 are considered essential for fabricating high-field compact fusion magnets. An essential aspect in the development of these magnets is an understanding of the most effective pinning centre materials at low temperatures (10 K – 30 K) and …

    cambridge Repository record

  5. Increased critical current density in rapidly grown RE-based cuprate superconducting coated conductors

    Feighan, JohnUniversity of Cambridge2021

    … demonstrated. We show it is possible to produce YBa2Cu3O7-x films at fast rates which have similar performance to stoichiometric films grown ten times slower. We also show it is possible to improve the performance of the liquid-assisted films via selective doping with secondary phases such as …

    cambridge Repository record

  6. Electromagnetic Modelling of Superconducting Sensor Designs

    Gerra, GuidoUniversity of Cambridge2003

    … Device (SQUID) magnetometers made of YBCO (YBa2Cu3O7-x) was considered. The inductances and effective areas were calculated using the software package 3D-MLSI. Resolution and reliability issues were first tested on simple superconducting systems, showing good agreement with analytical …

    cambridge Repository record

  7. Conversion kinetics of oxyfluoride-derived YBCO films

    Seleznev, Igor L., 1974-Massachusetts Institute of Technology2000

    YBa2Cu3O7-x (YBCO) thin films were prepared on lanthanum aluminate (LAO) single crystals and buffered (5000 Y20 3, 500 Ce02) Ni-single crystal substrates by metal organic deposition (MOD) process. Glassy films were converted to epitaxial YBCO films, by heating in wet atmosphere of N2/02 mixture. A …

    mit Repository record

  8. Superfluid Density Measurements of High-Temperature Superconducting Films

    Osborn, Kevin Daniel2012

    … we measure several intrinsic properties of YBa2Cu3O7-x (YBCO) and Bi2Sr2CaCu2O8+δ (Bi-2212) films. Two competing models of the pseudogap are compared to the temperature dependence of the superfluid density as a function of doping in Bi-2212. Near zero temperature, a maximum in the superfluid …

    uiuc Repository record

  9. The doping and magnetic field dependence of the heat capacity of yttrium barium copper oxide superconductors

    Ghiron, Kenneth Marc2012

    … on the doping effects in reduced oxygen content YBa2Cu3O7-x. The two most remarkable findings are: 1) there is a rapid decrease of the amplitude of the heat capacity anomaly with the reduction of the oxygen content and 2) the magnitude of the fluctuation effects near the superconducting …

    uiuc Repository record

  10. Superconductor-insulator transition induced by electrostatic charging in high temperature superconductors.

    Leng, Xiang2011

    Ultrathin YBa2Cu3O7−x films were grown on SrTiO3 substrates in a high pressure oxygen sputtering system to study the superconductor-insulator transition by electrostatic charging. While backside gating using SrTiO3 as a dielectric induces only small TC shifts, a clear transition between …

    umn Repository record

  11. Ultrafast Machining of High Temperature Superconducting Nanostructures for Novel Mesoscale Physics

    Lange, KatjanaUniversity of Cambridge2020

    The high temperature superconductor YBa2Cu3O7-x (YBCO), with its critical temperature above the boiling point of liquid nitrogen, promised to make the use of superconductors in industrial applications affordable. When focussing on electrical applications such as antennas and sensors, patterning of …

    cambridge Repository record

  12. Stacks of high temperature superconducting tape as trapped field magnets for energy applications

    Baskys, AlgirdasUniversity of Cambridge2017

    … high temperature superconductors (HTS), such as YBa2Cu3O7-x (YBCO) for trapped field applications. The present limits for trapped field magnitude have been determined, which provide a basis for the optimization of pulsed field magnetization techniques for in-situ magnetization in motors and …

    cambridge Repository record

  13. Enhancement Of Magnetic Vortex Pinning by APCs with Coherent BZO 1D-APC/YBCO Interface

    Ogunjimi, VictorUniversity of Kansas2022

    … high temperature superconductors (HTS) such as YBa2Cu3O7-x (YBCO). Unfortunately, a degraded APC/YBCO interface can limit the pinning force making high field/high Jc applications unfeasible. The effect of APC/YBCO interface on pinning is best exemplified by the difference in pinning force …

    ku Repository record