Synthesis and properties of a-axis and b-axis oriented GdBa2Cu3O7−δ high T c thin films
- 23 November 1992
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 61 (21) , 2598-2600
- https://doi.org/10.1063/1.108139
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.Keywords
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