Published 1991
| Version v1
Report
Dependence of the critical temperature of laser-ablated YBa2Cu3O(7-delta) thin films on LaAlO3 substrate growth technique
Creators
Description
Samples of LaAlO3 made by flame fusion and Czochralski method were subjected to the same temperature conditions that they have to undergo during the laser ablation deposition of YBa2Cu3O(7 - delta) thin films. After oxygen annealing at 750 C, the LaAlO3 substrate made by two methods experienced surface roughening. The degree of roughening on the substrate made by Czochralski method was three times greater than that on the substrate made by flame fusion. This excessive surface roughening may be the origin of the experimentally observed lowering of the critical temperature of a film deposited by laser ablation on a LaAlO3 substrate made by Czochralski method with respect to its counterpart deposited on LaAlO3 substrates made by flame fusion
Additional details
Publishing Information
- Imprint Title
- Solid State Technology Branch of NASA Lewis Research Center
- Imprint Pagination
- 153 p.
- Journal Page Range
- p. 135-137.
- Report number
- N--92-23412
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 24018528
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANNEALING; BARIUM OXIDES; COPPER OXIDES; CZOCHRALSKI METHOD; DEPOSITION; LANTHANUM COMPOUNDS; ROUGHNESS; SUBSTRATES; SUPERCONDUCTING FILMS; TEMPERATURE DEPENDENCE; THIN FILMS; TRANSITION TEMPERATURE; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTAL GROWTH METHODS; FILMS; HEAT TREATMENTS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SURFACE PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS
Optional Information
- Secondary number(s)
- NASA-TM--105159; E--6447; NAS--1.15:105159.