Accession Number : AD0710960

Title :   STUDIES OF THIN FILM HARD SUPERCONDUCTORS.

Descriptive Note : Technical rept. no. 4 (Final) 25 Oct 68-31 Dec 69,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS SCHOOL OF MINERAL AND METALLURGICAL ENGINEERING

Personal Author(s) : Toth,Louis E. ; Shy,Y. M.

Report Date : FEB 1970

Pagination or Media Count : 121

Abstract : Superconducting thin nitride films have been prepared by reactive sputtering. The films have very high superconducting T sub c's and excellent (J sub C)-H characteristics. The superconducting properties and the electrical resistivities of these films were studied as a function of sputtering parameters such as nitrogen partial pressure, deposition rate, substrate temperature and substrate materials. The properties of the films were then related to the structure of the films by electron microscopy studies. The effects of annealing the films were studied. Electrical resistivities and the temperature coefficient of the resistivities were determined. (Author)

Descriptors :   (*SUPERCONDUCTORS, ELECTRICAL PROPERTIES), (*NITRIDES, *SPUTTERING), SUBSTRATES, ANNEALING, ELECTRON MICROSCOPY, ELECTRICAL RESISTANCE, ELECTRON DIFFRACTION, SOLENOIDS, FILMS, NIOBIUM COMPOUNDS, TITANIUM COMPOUNDS, ZIRCONIUM COMPOUNDS

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE