Humidity sensitive PbTiO{sub 3} and PbZrO{sub 3} thin films prepared by a Sol-Gel process
- Univ. of Rome Tor Vergata (Italy)
- National Research Council of Italy, Rome (Italy)
- Co.R.I.Ve., Parma (Italy); and others
Bulk gels and thin films were prepared in the systems PbO-TiO{sub 2} and PbO-ZrO{sub 2} via the sol-gel route. Pb acetate, and Ti or Zr methoxyethanoate were used as precursors. Equimolar ratios of Pb/Ti or Pb/Zr were used. Bulk samples were studied by means of thermal analysis, MR spectroscopy, and XRD analysis. For electrical measurements, films were deposited from the sol on alumina substrates with comb-type gold electrodes by dip-coating. The films were heated to 200 and 700{degrees}C for 1 h. The humidity sensitivity of the films was evaluated by measuring d.c. at various relative humidity (rh) values. In the rh range from 5% to 85%, the current variation was as large as 3 orders of magnitude. Different trends were observed for the two materials: larger d.c. variations with rh for PbTiO{sub 3} were observed at rh < 50%, while for PbZrO{sub 3} the d.c. variation was smoother at rh < 40%, and steeper at higher rh values.
- OSTI ID:
- 99198
- Report Number(s):
- CONF-940911-; TRN: 95:005310-0088
- Resource Relation:
- Conference: 5. international conference on ceramic processing science and technology, Friedrichshafen (Germany), 11-14 Sep 1994; Other Information: PBD: 1995; Related Information: Is Part Of Ceramic transactions: Ceramic processing science and technology. Volume 51; Hausner, H.; Messing, G.L.; Hirano, Shin-ichi [eds.]; PB: 835 p.
- Country of Publication:
- United States
- Language:
- English
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