Measuring the shielding effectiveness of superconductive composites

Conference · Sun Jan 01 04:00:00 EST 1989

DOI:https://doi.org/10.1109/NSEMC.1989.37213· OSTI ID:6051105

Pienkowski, T; Johnson, D; Lanagan, M T; Poeppel, R B; Danyluk, S; McGuire, M

The ability to cool superconductors with liquid nitrogen instead of liquid helium has opened the door to a wide range of research. The well known Meissner effect, which states superconductors are perfectly diamagnetic, suggests shielding applications. One of the drawbacks to the new ceramic superconductors is the brittleness of the finished material. Because of this drawback any application which required any flexibility would be impractical. Therefore, this paper presents the results of a preliminary investigation into the measuring of shielding effectiveness of YBa/sub 2/Cu/sub 3/A/sub 7-x/ both as a composite and as a monolithic material. A flanged coaxial test fixture was selected to measure the shielding. The composite samples showed little or no shielding. The monolithic sample showed substantially less shielding than predicted. Possible explanations for this lack of shielding are discussed. 6 refs., 3 figs.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6051105
• Report Number(s): CONF-890508-1; ON: DE89015164
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
420201 -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BRITTLENESS
CHALCOGENIDES
COMPOSITE MATERIALS
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
MAGNETIC SHIELDING
MATERIALS
MECHANICAL PROPERTIES
MEISSNER-OCHSENFELD EFFECT
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SHIELDING
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTIVITY
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES