| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1478963 | Journal of the European Ceramic Society | 2005 | 4 Pages |
Abstract
Ceramics of the La2O3–TiO2 system have very good dielectric properties, which make La2Ti2O7 a good candidate for microwave applications. Using radio-frequency magnetron sputtering, we have deposited LaTiOxNy oxynitride thin films on (0 0 1) strontium titanate and glass substrates, starting from a homemade oxide target. The microwave dielectric properties of La2Ti2O7 ceramic have been investigated in the 100 Hz to 10 GHz range in order to have a reference for further studies. The evolution of ɛ′ and ɛ″ shows a space charge domain with a critical frequency Fc = 1 GHz. Measurements in the temperature range from 20 to 880 °C have been carried out to study phase transitions and conduction mechanisms.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
D. Fasquelle, J.C. Carru, L. Le Gendre, C. Le Paven, J. Pinel, F. Cheviré, F. Tessier, R. Marchand,