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| Titel: |
Sol-gel derived SrBi2Ta2O9 thin films and electrical properties |
| Auteur: |
Yamakawa, K. Ravichandran, D. Bhalla, A. S. Trolier-McKinstry, S. Dougherty, J. P. Roy, R. |
| Verschenen in: |
Ferroelectrics letters section |
| Paginering: | Jaargang 22 (1996) nr. 1-2 pagina's 41-45 |
| Jaar: |
1996-11-01 |
| Inhoud: |
Ferroelectric SrBi2Ta2O9 thin films were prepared from Sr metals, Ta-ethoxide and Bi, 2-ethylhexanoate. The films were prepared from both stoichiometric and 10 mol% Bi rich solutions. The stoichiometric film crystallized at 800°C had a spontaneous polarization value of 5 μC/cm2. The Bi rich film had lower crystallinity, finer grains and a smaller polarization. It was found to be necessary to anneal the films at high temperatures or for long time to achieve ferroelectricity. The non-crystalline states of sol-gel derived films differ from that observed in films deposited by physical vapor deposition. Crack free films were produced with the film thicknesses of 0.4 μm. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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