Published February 1992 | Version v1
Report Open

Recent results in characterization of melt-grown and quench-melt- grown YBCO superconductors

Creators

  • 1. Argonne National Lab., IL (United States)
  • 2. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering

Description

From the standpoint of applications, melt-grown (MG) and quench-melt-grown (QMG) bulk YBCO superconductors are of considerable interest. In this paper, we studied the intragranular critical current density (Jc), the apparent pinning potential (Uo), and the irreversibility temperature (Tirr) of MG and QMG samples and compared the results to those for conventionally sintered YBCO. A systematic increase in Uo and a slower drop in Jc with temperature indicate a systematic improvement in flux-pinning properties in progressing from the sintered YBCO to QMG and MG samples. Weaker pinning is observed in the QMG YBCO than in the MG samples

Availability note (English)

MF available from INIS under the Report Number; OSTI as DE92010281; NTIS; INIS; US Govt. Printing Office Dep.

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Additional details

Publishing Information

Imprint Pagination
8 p.
Report number
ANL/CP--75188

Conference

Title
High T_cSUH workshop on high temperature superconductivity (HTS) materials, bulk processing and bulk applications.
Dates
27-28 Feb 1992.
Place
Houston, TX (United States).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
23057541
Subject category
S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BARIUM OXIDES; COMPARATIVE EVALUATIONS; COPPER OXIDES; CRITICAL CURRENT; CRYSTAL GROWTH; CURRENT DENSITY; HIGH-TC SUPERCONDUCTORS; HYSTERESIS; MAGNETIC FLUX; MELTING; QUENCHING; SINTERING; SUPERCONDUCTIVITY; YTTRIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CURRENTS; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; EVALUATION; FABRICATION; HEAT TREATMENTS; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS

Optional Information

Contract/Grant/Project number
Contract W-31109-ENG-38; Grant SC7; Grant RP7911-8; Grant DMR-8809854
Funding organization
USDOE, Washington, DC (United States); Electric Power Research Inst., Palo Alto, CA (United States); National Science Foundation, Washington, DC (United States); Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States).
Secondary number(s)
CONF-920240--2.