Abstract
Phase equilibria of the PbO-MgO-TiO 2 and PbO-Nb 2O 5-TiO 2 systems have been experimentally determined at 1000°C and 1 atm pressure. This work is part of an overall comprehensive thermal analysis of the ferroelectric relaxor system Pb(Mg 1/3Nb 2/3)O 3-PbTiO 3. In the PbO-MgO-TiO 2 system, lead titanate equilibrates with each of the magnesium titanates, MgO and a titania saturated liquid lead oxide. The most significant feature in the PbO-Nb 2O 5-TiO 2 system is the extent of solid solution of the lead and oxygen-defect pyrochlore phase, Pb 3(Nb 1-xTi x) 4O 13, in which titanium dissolution is as much as x = 0.394 (or ∼22.5 cation % Ti 4+).
Original language | English (US) |
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Pages (from-to) | 139-149 |
Number of pages | 11 |
Journal | Ceramic Transactions |
Volume | 169 |
State | Published - Aug 22 2005 |
Event | 106th Annual Meeting of the American Ceramic Society - Indianapolis, IN, United States Duration: Apr 18 2004 → Apr 21 2004 |
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry