Inorganic Dielectrics Research.
Abstract
The report discusses results and problems in the production of hot-pressed specimens of high purity SrTiO3. Also described are procedures for the incorporation of minor substitutions in SrTiO3 and the electrical properties obtained from -40 to +80C at 1 KHz. Equipment and test procedures are described for determining electrical properties and change of permittivity with biasing voltages for a number of materials including: unannealed and annealed single crystal SrTiO3, pure polycrystalline SrTiO3, polycrystalline SrTiO3 with minor substitutions, CaTiO3, BaZrO3 and lithium thallium tartrate. Electrical properties of bodies with BaO to TiO2 ratios between 1:1 and 1:3 are discussed. Positive, negative, and nearly zero temperature coefficients of capacitance were obtained depending upon composition and firing temperature. Also discussed are compositions in the CaTiO3-MgTiO3-La2O3.2TiO2 system. Results on specimens of BaTi3O7 are reported. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1971
- Accession Number
- AD0886925
Entities
People
- E. J. Smoke
- E. L. Kastenbein
- H. C. Mcgowan
- J. Rooda
- K. R. Shillito