Accession Number : AD0424626

Title :   MICROWAVE FERROELECTRICS.

Descriptive Note : Final rept., 16 June-15 Sep 63,

Corporate Author : RAYTHEON CO WALTHAM MA

Personal Author(s) : Gregory, W. ; Harris, M. ; Nutter, P. B. ; Waugh, J. S.

Report Date : SEP 1963

Pagination or Media Count : 57

Abstract : The dielectric nonlinearity of various materials was investigated at S-band. Anomalous features of the microwave resonances observed in samples of SrTiO3 under conditions of applied dc field are discussed. A cavity perturbation technique for measurement of dielectric properties near the Curie temperature has been developed. The technique uses exact calculation to replace the usual small perturbation assumptions which are invalid for high dielectric constant materials. (Author)

Descriptors :   (*FERROELECTRIC CRYSTALS, DIELECTRIC PROPERTIES), (*FERROELECTRIC MATERIALS, DIELECTRIC PROPERTIES), (*CERAMIC MATERIALS, DIELECTRIC PROPERTIES), (*DIELECTRICS, CERAMIC MATERIALS), (*MICROWAVE SPECTROSCOPY, FERROELECTRIC MATERIALS), S BAND, X BAND, TITANATES, STRONTIUM COMPOUNDS, IMPURITIES, BARIUM COMPOUNDS, THEORY, ELECTRIC FIELDS, TEMPERATURE, STANNATES, EXPERIMENTAL DATA, ALUMINUM COMPOUNDS, OXIDES.

Distribution Statement : APPROVED FOR PUBLIC RELEASE