Synthesis and properties of a-axis and b-axis oriented GdBa2Cu3O7 - delta high Tc thin films
Abstract
We report the growth and properties of a-axis oriented GdBa2Cu3O7-δ high Tc thin films on (100) SrTiO3 substrates by dc magnetron sputtering. It is found that GdBa2Cu3O7-δ films on (100) SrTiO3 exhibit a-oriented growth at higher substrate temperatures compared with YBa2Cu3O7-δ films. By utilizing low-temperature-grown a-axis GdBa2Cu3O7-δ films (200 Å in thickness) as a self-template, pure a-axis films can be grown at elevated temperatures. The growth of b-axis film on vicinal (100) SrTiO3 under similar growth conditions is also reported.
- Publication:
-
Applied Physics Letters
- Pub Date:
- November 1992
- DOI:
- Bibcode:
- 1992ApPhL..61.2598N
- Keywords:
-
- Copper Oxides;
- Gadolinium Alloys;
- High Temperature Superconductors;
- Mixed Oxides;
- Superconducting Films;
- Barium Oxides;
- Electrical Resistivity;
- Magnetron Sputtering;
- Thin Films;
- X Ray Diffraction;
- Solid-State Physics