Structure property relationships in a nanoparticle-free SmBCO coated conductor

Knibbe, R., Strickland, N. M., Wimbush, S. C., Puichaud, A-H and Long, N. J. (2016) Structure property relationships in a nanoparticle-free SmBCO coated conductor. Superconductor Science and Technology, 29 6: . doi:10.1088/0953-2048/29/6/065006

Author Knibbe, R.
Strickland, N. M.
Wimbush, S. C.
Puichaud, A-H
Long, N. J.
Title Structure property relationships in a nanoparticle-free SmBCO coated conductor
Journal name Superconductor Science and Technology   Check publisher's open access policy
ISSN 1361-6668
Publication date 2016-04-07
Year available 2016
Sub-type Article (original research)
DOI 10.1088/0953-2048/29/6/065006
Open Access Status Not Open Access
Volume 29
Issue 6
Total pages 14
Place of publication Bristol, United Kingdom
Publisher Institute of Physics Publishing
Language eng
Formatted abstract
We examine the temperature, field and field angle dependence of the critical current of a SmBa2Cu3O y coated conductor produced by reactive co-evaporation. A transmission electron microscopy based microstructural analysis shows the film contains extended c-axis defects, stacking faults, and two different species of inclined defects. By applying a maximum entropy decomposition of the field angle dependent critical current I c(θ) datasets we are able to identify the individual contributions of these defects to the critical current even though they do not produce distinct peaks but rather an anisotropy in I c(θ). We are able to confirm the structure property relationships by determining the matching fields where each of the individual defect contributions are a maximum and showing that these are consistent with the observed microstructure. For a critical current component having a maximum magnitude at an intermediate temperature we propose a model of thermally activated depinning to explain the behaviour.
Keyword Coated conductor
Critical current
Maximum entropy
Reactive co-evaporation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
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