Sökning: "YBa2Cu3O7"

Visar resultat 1 - 5 av 45 avhandlingar innehållade ordet YBa2Cu3O7.

  1. 1. Studies of magnetoresistance and Y substitutions in YBa2Cu3O7-delta high temperature superconductors

    Författare :Magnus Andersson; Östen Rapp; Oystein Fischer; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; high-temperature superconductors; elctrical conductivity; magnetoresistance; measurement systems; YBa2Cu3O7; substitutional effects;

    Sammanfattning : .... LÄS MER

  3. 2. YBa2Cu3O7-δ Biepitaxial and Step Edge Josephson Junctions on MgO Substrates. SQUID Amplifier

    Författare :Jaime Ramos; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; step edge junction; noise; biepitaxial junction; energy resolution; high-TC superconductor; dc SQUID; YBa2Cu3O7; laser deposition; CeO2; amplifier; Germany; sapphire; MgO;

    Sammanfattning : This thesis concerns the preparation of Josephson junctions and their applications in Superconducting Quantum Interference Devices (SQUIDs). High temperature superconductors were used for operation at 77 K, the boiling temperature of liquid nitrogen. LÄS MER

  4. 3. Step Edge Junctions in YBa2Cu3O7-δ High-Tc Superconductors

    Författare :Huai-ren Yi; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; YBa2Cu3O7-delta; barrier property; Josephson flux-flow transistor; laser deposition; electron-beam lithography; magnetron sputtering; thin film; step edge junction; amorphous carbon;

    Sammanfattning : This thesis describes experimental work on GdBa2Cu3O7-.delta. (GBCO) thin films, YBa2Cu3O7-.delta. LÄS MER

  5. 4. Fine Scale Microstructures of Josephson Junctions in YBa2Cu3O7-δ Thin Film Structures

    Författare :Marica Gustafsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; superconductors; thin film evolution; microstructure; nucleation; Josephson junctions; multilayer; YBa2Cu3O7-delta; transmission electron microscopy;

    Sammanfattning : This work concerns the microstructure of YBa2Cu3O7-.delta. (YBCO) and other related thin films in multilayer structures, studied by mainly transmission electron microscopy (TEM). LÄS MER

  7. 5. Heterodyne mixers based on YBa2Cu3O7-δ

    Författare :Fredrik Rönnung; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hot-electron bolometer; high temperature superconductor; pulsed laser deposition; heterodyne detector; submillimeter mixer;

    Sammanfattning : .... LÄS MER