RESEARCH AND DEVELOPMENT OF HIGH TEMPERATURE FERROELECTRIC MATERIALS
Abstract
This report includes: A FAMILY OF FERROELECTRIC BISMUTH COMPOUNDS, by E. C. Subbarao. 26 Apr 61, 1v. incl. illus. tables (Scientific paper no. 406FD533-P3) The effects of small additions of various sintering aids (mineralizers) on the properties of PbTiO3 were evaluated. The majority of these additions produced strong PbTiO3 ceramics with densities greater than 90% of theoretical. CaF2 (in concentrations of 0.5 and 1.0 mol-%), improved the piezoelectric coefficient of PbTiO3 by a factor of 2 to 3. This large increase is believed to be related to the particular microstructure obtained for CaF2 bearing samples. Significant improvements in resistivity could lead to ferroelectric transducers for operation at temperatures beyond those of present commercially available materials. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 11, 1961
- Accession Number
- AD0255979
Entities
People
- E.c. Subbarao
- T.y. Tien
Organizations
- Westinghouse Electric Corporation