Magneto-optical imaging of transport currents in YBa2Cu3O7-x on RABiTS™

D. Matthew Feldmann; Jodi L. Reeves; Anatollii A. Polyanskii; Amit Goyal; Ron Feenstra; D. F. Lee; M. Paranthaman; D. M. Kroeger; D. K. Christen; Sue E. Babcock; David C. Larbalestier

doi:10.1109/77.919885

Magneto-optical imaging of transport currents in YBa₂Cu₃O_7-x on RABiTS™

D. Matthew Feldmann, Jodi L. Reeves, Anatollii A. Polyanskii, Amit Goyal, Ron Feenstra, D. F. Lee, M. Paranthaman, D. M. Kroeger, D. K. Christen, Sue E. Babcock, David C. Larbalestier

Nanomaterials Chemistry Group

Research output: Contribution to journal › Conference article › peer-review

22 Scopus citations

Abstract

Two YBa₂Cu₃O_7-x (YBCO) on RABiTS™ conductors with high J_c(0 T,77 K) values of 2.3 and 2.4 MA/cm² were scribed by laser cutting to constrict supercurrent flow. On one of these tracks, magneto-optical (MO) imaging of the self-field produced by a transport current directly demonstrates the percolative nature of the current flow. Using Backscattered Electron Kikuchi Pattern (BEKP) analysis, we have found that Ni grain boundaries (GBs) > 5° generally introduce GBs in the YBCO that have lower J_c values than the intra-grain.

Original language	English
Pages (from-to)	3772-3775
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	11
Issue number	1 III
DOIs	https://doi.org/10.1109/77.919885
State	Published - Mar 2001
Event	2000 Applied Superconductivity Conference - Virginia Beach, VA, United States Duration: Sep 17 2000 → Sep 22 2000

Funding

Manuscript received September 16, 2000. This work was supported by the Air Force Oftice of Scientific Research Grant No. F49620-00-1-0091, D.M . Feldmann, J. L. Reeves, A. A. Polyanskii, S. E. Babcock and D. C. Larbalestier are at the Applied Superconductivity Center, University of Wisconsin - Madison, Madison, WI 53706 USA (e-mail: [email protected]) A. Goyal, R. Feenstra, D. F. Lee, M. Paranthaman, D. M. Kroeger, and D. K. Christen are at Oak Ridge National Laboratory, Oak Ridge, TN 37831 (e-mail:[email protected])

Keywords

Coated conductors
Grain boundaries
Magneto-optical imaging
RABiTS

Access to Document

10.1109/77.919885

Cite this

@article{c1f5e5cc5cfd49859c30a735e394ac3f,

title = "Magneto-optical imaging of transport currents in YBa2Cu3O7-x on RABiTS{\texttrademark}",

abstract = "Two YBa2Cu3O7-x (YBCO) on RABiTS{\texttrademark} conductors with high Jc(0 T,77 K) values of 2.3 and 2.4 MA/cm2 were scribed by laser cutting to constrict supercurrent flow. On one of these tracks, magneto-optical (MO) imaging of the self-field produced by a transport current directly demonstrates the percolative nature of the current flow. Using Backscattered Electron Kikuchi Pattern (BEKP) analysis, we have found that Ni grain boundaries (GBs) > 5° generally introduce GBs in the YBCO that have lower Jc values than the intra-grain.",

keywords = "Coated conductors, Grain boundaries, Magneto-optical imaging, RABiTS",

author = "Feldmann, {D. Matthew} and Reeves, {Jodi L.} and Polyanskii, {Anatollii A.} and Amit Goyal and Ron Feenstra and Lee, {D. F.} and M. Paranthaman and Kroeger, {D. M.} and Christen, {D. K.} and Babcock, {Sue E.} and Larbalestier, {David C.}",

year = "2001",

month = mar,

doi = "10.1109/77.919885",

language = "English",

volume = "11",

pages = "3772--3775",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers",

number = "1 III",

note = "2000 Applied Superconductivity Conference ; Conference date: 17-09-2000 Through 22-09-2000",

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T1 - Magneto-optical imaging of transport currents in YBa2Cu3O7-x on RABiTS™

AU - Feldmann, D. Matthew

AU - Reeves, Jodi L.

AU - Polyanskii, Anatollii A.

AU - Goyal, Amit

AU - Feenstra, Ron

AU - Lee, D. F.

AU - Paranthaman, M.

AU - Kroeger, D. M.

AU - Christen, D. K.

AU - Babcock, Sue E.

AU - Larbalestier, David C.

PY - 2001/3

Y1 - 2001/3

N2 - Two YBa2Cu3O7-x (YBCO) on RABiTS™ conductors with high Jc(0 T,77 K) values of 2.3 and 2.4 MA/cm2 were scribed by laser cutting to constrict supercurrent flow. On one of these tracks, magneto-optical (MO) imaging of the self-field produced by a transport current directly demonstrates the percolative nature of the current flow. Using Backscattered Electron Kikuchi Pattern (BEKP) analysis, we have found that Ni grain boundaries (GBs) > 5° generally introduce GBs in the YBCO that have lower Jc values than the intra-grain.

AB - Two YBa2Cu3O7-x (YBCO) on RABiTS™ conductors with high Jc(0 T,77 K) values of 2.3 and 2.4 MA/cm2 were scribed by laser cutting to constrict supercurrent flow. On one of these tracks, magneto-optical (MO) imaging of the self-field produced by a transport current directly demonstrates the percolative nature of the current flow. Using Backscattered Electron Kikuchi Pattern (BEKP) analysis, we have found that Ni grain boundaries (GBs) > 5° generally introduce GBs in the YBCO that have lower Jc values than the intra-grain.

KW - Coated conductors

KW - Grain boundaries

KW - Magneto-optical imaging

KW - RABiTS

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DO - 10.1109/77.919885

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