Accession Number:

ADA256329

Title:

Processing and Characterization of Electrophoretically Deposited Holmium Barium Copper Oxide Superconductor Films

Descriptive Note:

Technical rept. for period ending 1991

Corporate Author:

ARMY LAB COMMAND FORT MONMOUTH NJ ELECTRONICS TECHNOLOGY AND DEVICES LAB

Report Date:

1992-09-01

Pagination or Media Count:

15.0

Abstract:

Thick films of HoBa2Cu3O7-x HBCO were electrophoretically deposited on bulk YBa2Cu3O7-x YBCO pellets in magnetic fields of 0 and 2 T. X-ray diffraction patterns indicated no preferred orientation for the films. Scanning electron microscopy revealed that the films averaged 7 microns thick, have an open pore structure with microbridges between particles, and a minimal amount of grain growth. Some microcracking of the films was observed. The surface resistivities Rs of the films were measured from 5 to 140K using a resonant cavity at 35 GHz. The best films had a Rs of 30 milliohms at 10K. The transition temperature Tc of the films ranged from 85 to 90K as measured by the four- point probe method.

Subject Categories:

  • Physical Chemistry
  • Coatings, Colorants and Finishes
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE