Processing and characterization of electrophoretically deposited holmium barium copper oxide superconductor films. Technical report for period ending 1991

Technical Report · Tue Sep 01 00:00:00 EDT 1992

OSTI ID:6828344

Dornath-Mohr, M A; Eckart, D W; Finnegan, R D; Potenziani, E; Wilber, W

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.

• Research Organization: Army Electronics Technology and Devices Lab., Fort Monmouth, NJ (United States)
• OSTI ID: 6828344
• Report Number(s): AD-A-256329/4/XAB; SLCET-TR-92-12
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SUPERCONDUCTING FILMS
PROCESSING
SURFACE PROPERTIES
X-RAY DIFFRACTION
BARIUM OXIDES
CAVITY RESONATORS
COPPER OXIDES
CUPRATES
DEPOSITION
DIFFRACTION
ELECTRON MICROSCOPY
ELECTROPHORESIS
GRAIN GROWTH
HOLMIUM OXIDES
MAGNETIC FIELDS
ORIENTATION
PARTICLES
PELLETS
SCANNING ELECTRON MICROSCOPY
TRANSITION TEMPERATURE
YTTRIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
ELECTRONIC EQUIPMENT
EQUIPMENT
FILMS
HOLMIUM COMPOUNDS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
RESONATORS
SCATTERING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360207 - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)