Superconducting Thin Films, Composites and Junctions

Abstract

The first specific heat measurements on artificially layered superconducting composite structures have been made. Small sample calorimetry has been used to measure the specific heat of Nb2r multilayers with a bi-layer period varying from 32 A to 429 A ( to a sample thickness of 1.5 um) over the temperature range from 1.5 to 20. The normal state parameters agree with the presence of an interface of an niobrium zirconium alloy in agreement with earlier X-ray results. The behavior of the thermally measured transition into the superconducting state and the magnitude of the associated specific heat increase also agree with the Tri-layer model. (aw)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1984
Accession Number
ADA215246

Entities

People

  • Theodore H. Geballe

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Agreements
  • Alloys
  • California
  • Chemistry
  • Composite Materials
  • Composite Structures
  • Films
  • Materials
  • Measurement
  • New Jersey
  • Physics
  • Radiation
  • Specific Heat
  • Thin Films
  • Transitions
  • X Rays

Fields of Study

  • Physics

Readers

  • Superconducting Magnet Technology
  • Thermal Physics or Thermal Science.
  • Thin Film Deposition Science.