Accession Number : AD0673101

Title :   MICROWAVE CONDUCTIVITY OF SUPERCONDUCTING THIN FILMS.

Descriptive Note : Final rept. 1 Jun 67-31 May 68,

Corporate Author : RCA LABS PRINCETON N J

Personal Author(s) : D'Aiello,Robert V.

Report Date : 31 MAY 1968

Pagination or Media Count : 24

Abstract : Microwave transmission as a function of temperature through thin superconducting films of pure tin and granular aluminum is reported. The experiments were conducted at 20 GHz, and covered the temperature range 4.2 degrees K to 1.8 degrees K. By a suitable analysis, the magnitude and temperature dependence of the complex conductivity of the film are obtained from the transmission data and related to the impedance of the films. The relative impedance levels for the tin and aluminum films are discussed with relation to use in parametric amplifier circuits. Methods of film preparation for the tin and granular aluminum are presented. (Author)

Descriptors :   (*SUPERCONDUCTORS, SUPERHIGH FREQUENCY), (*ELECTRICAL CONDUCTIVITY, SUPERCONDUCTORS), TIN, ALUMINUM, TRANSITION TEMPERATURE, CRYOGENICS, ELECTRICAL IMPEDANCE, PARAMETRIC AMPLIFIERS, VAPOR PLATING, METAL FILMS

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE