Homogeneous and stoichiometric PbTiO3 and PbZro.52Tio.48O3 gel fibers were drawn from viscous solutions prepared by sol-gel processing of alkoxide precursors. The fibrous gels on heating at 450 and 600 °C, respectively, formed the well-crystallized phases of PbTiO3 and PbZro.52Tio.48O3 Fibers heat treated at 700 °C are a few centimeters long and 50 to 150 μm in diameter. PbZro.52Tio.48O3 fibers subjected to heat treatment at 700 °C for 1 h consisted of fully dense submicron grains (0.15 to 0.2 (μm). However, PbTiO3 fibers under analogous conditions showed a few micropores with grains of ~0.1 μm. Dielectric constants of these PbTiO3 and PbZro.52Tio.48O3 fibers were approximately 300 and 800, respectively.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering