Growth morphologies of (001), (100), and (010) oriented Er{sub 5}Ba{sub 7}Cu;{sub 12}O{sub y} high-temperature superconductor thin films on various substrates
- Univ. of Notre Dame, IN (United States)
Er{sup 5}Ba{sub 7}Cu{sub 12}O{sub y} thin film is a high-temperature superconductor material (T{sub c}=93 K). The growth morphologies of Er{sub 5}Ba{sub 7}Cu{sub 12}O{sub y} thin films on various substrates were studied by scanning electron microscopy. The films were prepared by molecular beam deposition and postgrowth annealing. The Er{sub 5}Ba{sub 7}Cu{sub 12}O{sub y} thin films on LaAlO{sub 3} (100) [and SrTiO{sub 3} (100)] substrates showed small amount of (100) oriented grains on top of a (001) epilayer if the films were annealed in the 850-865 {degrees}C range (film thickness=0.4 {mu}m). The (001) oriented Er{sub 5}Ba{sub 7}Cu{sub 13}O{sub y}/cubic-ZrO{sub 2}(100) thin films showed a {open_quotes}spherullite{close_quotes} - type growth morphology. On MgO (100) [and cubic-ZrO{sub 2}(100)] substrates, Er{sub 5}Ba{sub 7}Cu{sub 12}O{sub y} thin films with mixed (010) and (001) growth orientations were obtained. 7 refs., 4 figs.
- DOE Contract Number:
- FG02-90ER45427
- OSTI ID:
- 136253
- Journal Information:
- Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena, Vol. 12, Issue 2; Other Information: PBD: Mar-Apr 1994
- Country of Publication:
- United States
- Language:
- English
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