YBa2Cu3O7 thin films grown on sapphire with epitaxial yttria-stabilized zirconia buffer layers
Abstract
Epitaxial yttria-stabilized zirconia (YSZ) buffer layers were grown successfully on sapphire (112¯0) substrates by using rf magnetron sputtering method. The films were cubic in structure with their (100) orientation normal to the substrate surface. YBa2Cu3O7 thin films were deposited on the YSZ/sapphire substrates by the in situ dc magnetron sputtering method. X-ray diffraction analysis showed they were highly c-axis oriented with the zero resistance temperature TCO=92 K and critical current density Jc=1.6×106 A/cm2 at 77 K.
- Publication:
-
Applied Physics Letters
- Pub Date:
- November 1992
- DOI:
- 10.1063/1.108181
- Bibcode:
- 1992ApPhL..61.2412C
- Keywords:
-
- High Temperature Superconductors;
- Magnetron Sputtering;
- Thin Films;
- Ybco Superconductors;
- Zirconium Oxides;
- Current Density;
- Epitaxy;
- Sapphire;
- Solid-State Physics