Accession Number : AD0710958

Title :   STUDIES OF THIN FILM HARD SUPERCONDUCTORS.

Descriptive Note : Interim technical rept. no. 2, 26 Oct 65-25 Oct 66,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS PHYSICAL ELECTRONICS LAB

Personal Author(s) : Anderson,D. E.

Report Date : SEP 1967

Pagination or Media Count : 276

Abstract : The preparation of superconducting V3Si films by sputter-deposition from V and Si targets is described. The dependence of critical current and magnetic field on deposition parameters is discussed. The operation of a novel rf sputtering system in which line dipole targets are excited in argon is described. Progress on deposition of V3Si by electron bombardment evaporation of V and Si from line sources in self-crucible configuration is described. Measurements of the ac resistance of a number of Nb thin film superconductors are described. A study of the distribution of current in a thin superconducting film as a function of total current applied and of external magnetic field is described. The experimental technique uses the optical Faraday effect to measure the magnetic field distribution outside the film and from this knowledge to determine the current distribution in the film. (Author)

Descriptors :   (*SUPERCONDUCTORS, VAPOR PLATING), (*VANADIUM COMPOUNDS, *SPUTTERING), MAGNETOOPTICS, ELECTRICAL RESISTANCE, ELECTRON IRRADIATION, VACUUM APPARATUS, SILICON DIOXIDE, SOLENOIDS, SILICIDES, FILMS

Subject Categories : Mfg & Industrial Eng & Control of Product Sys
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE