An X-Ray Study on PbO-Nb2O5-TiO2 System
- 1 March 1966
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 5 (3)
- https://doi.org/10.1143/jjap.5.198
Abstract
Ternary system PbO-Nb2O5-TiO2 was studied. Ceramic samples were prepared at 900°C and 1200°C in air, and analyzed by X-ray powder diffraction method. The phase diagrams for this system at the two sintering temperatures are constructed. The diagrams indicate that ternary compounds PbO-Nb2O5-TiO2 (PbNb2TiO8) and PbO-2Nb2O5-3TiO2 (PbNb4Ti3O17) exist, and that a pyrochlore type cubic compound phase extends from 3PbO-2Nb2O5 site toward TiO2-rich part of the system, covering a considerably wide region. Another single phase region near the TiO2 region has remained unidentified. The PbNb2TiO8 compound is found to be piezoelectric.Keywords
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