Formation and orientation control of Y 2O 3 inclusions in pulsed laser deposited YBa 2Cu 3O 7-δ films by using a melt-textured target
Abstract
The formation and orientation of Y 2O 3 inclusions in pulsed laser deposited YBa 2Cu 3O 7-δ films by using Y 2BaCuO 5-containing melt-textured target have been studied by X-ray diffractometry and transmission electron microscopy. The results show that Y 2O 3 inclusions, rather than the Y 2BaCuO 5 phase contained in the target, are formed in the films. [1 1 1]- and [1 0 0]-oriented Y 2O 3 inclusions have been found in the YBa 2Cu 3O 7-δ films. The orientation of Y 2O 3 inclusions is dependent on the deposition temperature. If the deposition temperature is high enough, [1 1 1]-oriented Y 2O 3 can be inhibited. The reasons for the formation of Y 2O 3 inclusions and their orientation are discussed.
- Publication:
-
Journal of Crystal Growth
- Pub Date:
- May 2003
- DOI:
- 10.1016/S0022-0248(03)00824-8
- Bibcode:
- 2003JCrGr.252..560W