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Computer simulation of current percolation in polycrystalline high-temperature superconductors

Abstract

YBCO-coated conductors were modelled in a computer simulation using a resistor network concept, with the resistors representing the grain boundaries. Dissipation above the critical current, accompanied by flux penetration into the grain boundaries, was described by a linear (flux-flow) resistivity. The model allowed calculation of the combined percolation of current and magnetic flux. Current-voltage data showed scaling in agreement with percolation theory for two-dimensional systems. The influence of grain alignment and electromagnetic parameters on conductor performance was investigated. (author)
Authors:
Zeimetz, B; [1]  Rutter, N A; Glowacki, B A; Evetts, J E [1] 
  1. Department of Materials Science and Interdisciplinary Research Centre in Superconductivity, Cambridge University, Pembroke Street, Cambridge (United Kingdom)
Publication Date:
Sep 01, 2001
Product Type:
Journal Article
Reference Number:
EDB-01:083408
Resource Relation:
Journal Name: Superconductor Science and Technology; Journal Volume: 14; Journal Issue: 9; Conference: 10. international workshop on critical currents in superconductors (IWCC2001), Goettingen (Germany), 4-7 Jun 2001; Other Information: Country of input: International Atomic Energy Agency (IAEA); 25 refs; PBD: Sep 2001
Subject:
36 MATERIALS SCIENCE; BARIUM OXIDES; COMPUTERIZED SIMULATION; CUPRATES; GRAIN BOUNDARIES; GRAIN ORIENTATION; HIGH-TC SUPERCONDUCTORS; MAGNETIC FLUX; YTTRIUM OXIDES
OSTI ID:
20189058
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0953-2048; SUSTEF; TRN: GB01$6737041774
Availability:
Available online at the Web site for the journal Superconductor Science and Technology (ISSN 1361-6668) http://www.iop.org/;INIS
Submitting Site:
GBN
Size:
page(s) 672-675
Announcement Date:

Citation Formats

Zeimetz, B, Rutter, N A, Glowacki, B A, and Evetts, J E. Computer simulation of current percolation in polycrystalline high-temperature superconductors. United Kingdom: N. p., 2001. Web. doi:10.1088/0953-2048/14/9/307.
Zeimetz, B, Rutter, N A, Glowacki, B A, & Evetts, J E. Computer simulation of current percolation in polycrystalline high-temperature superconductors. United Kingdom. doi:10.1088/0953-2048/14/9/307.
Zeimetz, B, Rutter, N A, Glowacki, B A, and Evetts, J E. 2001. "Computer simulation of current percolation in polycrystalline high-temperature superconductors." United Kingdom. doi:10.1088/0953-2048/14/9/307. https://www.osti.gov/servlets/purl/10.1088/0953-2048/14/9/307.
@misc{etde_20189058,
title = {Computer simulation of current percolation in polycrystalline high-temperature superconductors}
author = {Zeimetz, B, Rutter, N A, Glowacki, B A, and Evetts, J E}
abstractNote = {YBCO-coated conductors were modelled in a computer simulation using a resistor network concept, with the resistors representing the grain boundaries. Dissipation above the critical current, accompanied by flux penetration into the grain boundaries, was described by a linear (flux-flow) resistivity. The model allowed calculation of the combined percolation of current and magnetic flux. Current-voltage data showed scaling in agreement with percolation theory for two-dimensional systems. The influence of grain alignment and electromagnetic parameters on conductor performance was investigated. (author)}
doi = {10.1088/0953-2048/14/9/307}
journal = {Superconductor Science and Technology}
issue = {9}
volume = {14}
journal type = {AC}
place = {United Kingdom}
year = {2001}
month = {Sep}
}