Accession Number : AD0433638


Title :   STUDY OF THIN FILM COMPOUNDS FORMED FROM SIMUTANEOUSLY EVAPORATED CONSTITUENTS.


Descriptive Note : Quarterly rept. no. 2, 1 Sep-30 Nov 63,


Corporate Author : GENERAL TELEPHONE AND ELECTRONICS LABS INC BAYSIDE NY BAYSIDE LAB


Personal Author(s) : Hagenlocher, A K ; Reuersanger, A E


Report Date : 30 Dec 1963


Pagination or Media Count : 25


Abstract : Thin films of lead titanate have a number of advantages over barium titanate. Details of the preparation of lead titanate films by the simultaneous evaporation of lead and titanium oxides, initial attempts to increase the electrical resistance by the incorporation of small amounts of metal oxides, and preliminary experiments with insulator substrates are described. The capacitance, dissipation factor and leakage resistance of lead titanate films are comparable to those found for barium titanate. The frequency dependence of the capacitance and losses follows closely a relation given by Gevers for dielectrics of irregular structure. Strong x-ray diffraction patterns of tetragonal PbTiO3 have been obtained for films 1500 to 2500 A thick. Electron micrographs of the film surface show a uniform texture of grains of sizes between 1000 and 3000 A. (Author)


Descriptors :   *OXIDES , *FILMS , *LEAD COMPOUNDS , EVAPORATION , TITANATES , TITANATES , CAPACITANCE , DIELECTRICS , TITANIUM COMPOUNDS , DIELECTRIC PROPERTIES , X RAY DIFFRACTION , VACUUM APPARATUS , VAPOR DEPOSITION , HIGH TEMPERATURE , PLATINUM ALLOYS , RHODIUM ALLOYS , AGING(MATERIALS) , HEAT TREATMENT , VOLTAGE , ARGON , OXYGEN , ELECTRON MICROSCOPY , CAPACITORS


Distribution Statement : APPROVED FOR PUBLIC RELEASE