Accession Number : AD0886925

Title :   Inorganic Dielectrics Research.

Descriptive Note : Semi-annual rept. 1 Jul-31 Dec 70,

Corporate Author : NEW JERSEY CERAMIC RESEARCH STATION NEW BRUNSWICK

Personal Author(s) : Smoke, E. J. ; Kastenbein, E. L. ; McGowan, H. C. ; Rooda, J. ; Shillito, K. R.

Report Date : JUL 1971

Pagination or Media Count : 105

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)

Descriptors :   *TITANATES), (*DIELECTRICS, BARIUM COMPOUNDS, STRONTIUM COMPOUNDS, ELECTRICAL PROPERTIES, LABORATORY EQUIPMENT, MICROWAVES, CERAMIC MATERIALS.

Subject Categories : Ceramics, Refractories and Glass
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE