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Title: Correlation Between Grain and Grain-Boundary Critical Current Densities in ex situ Coated Conductors with Variable YBa 2Cu 3O 7- δ Layer Thickness

Abstract

The dependence of the percolative critical current density at low magnetic fields on YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) layer thickness is studied by comparing grain, J{sub c}{sup G}, and grain-boundary, J{sub c}{sup GB}, critical current densities for a series of ex situ processed YBCO films on a RABiTS template. Both critical current densities decrease as a function of thickness and the values of J{sub c}{sup G} and J{sub c}{sup GB} show a clear correlation which suggests the existence of an interaction between Abrikosov-Josephson vortices on the grain boundaries and Abrikosov vortices in the bulk of the grains. This opens the possibility to improve J{sub c}{sup GB} by optimizing the pinning capabilities of the grains.

Authors:
 [1];  [1];  [1];  [2];  [2]
  1. ICMAB, Barcelona, Spain
  2. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
OE USDOE - Office of Electric Transmission and Distribution
OSTI Identifier:
1003145
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 88; Journal Issue: 12; Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BARIUM COMPOUNDS; CORRELATIONS; CRITICAL CURRENT; DENSITY; FILMS; FUNCTIONS; GRAIN BOUNDARIES; HIGH-TC SUPERCONDUCTORS; INTERACTIONS; LAYERS; MAGNETIC FIELDS; MAGNETIC FLUX; SUPERCONDUCTING FILMS; SUPERCONDUCTIVITY; THICKNESS; THIN FILMS; VORTICES; YTTRIUM COMPOUNDS

Citation Formats

Palau, A., Puig, T., Obradors, X., Feenstra, Roeland, and Gapud, Albert Agcaoili. Correlation Between Grain and Grain-Boundary Critical Current Densities in ex situ Coated Conductors with Variable YBa2Cu3O7- δ Layer Thickness. United States: N. p., 2006. Web. doi:10.1063/1.2188044.
Palau, A., Puig, T., Obradors, X., Feenstra, Roeland, & Gapud, Albert Agcaoili. Correlation Between Grain and Grain-Boundary Critical Current Densities in ex situ Coated Conductors with Variable YBa2Cu3O7- δ Layer Thickness. United States. doi:10.1063/1.2188044.
Palau, A., Puig, T., Obradors, X., Feenstra, Roeland, and Gapud, Albert Agcaoili. Sun . "Correlation Between Grain and Grain-Boundary Critical Current Densities in ex situ Coated Conductors with Variable YBa2Cu3O7- δ Layer Thickness". United States. doi:10.1063/1.2188044.
@article{osti_1003145,
title = {Correlation Between Grain and Grain-Boundary Critical Current Densities in ex situ Coated Conductors with Variable YBa2Cu3O7- δ Layer Thickness},
author = {Palau, A. and Puig, T. and Obradors, X. and Feenstra, Roeland and Gapud, Albert Agcaoili},
abstractNote = {The dependence of the percolative critical current density at low magnetic fields on YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) layer thickness is studied by comparing grain, J{sub c}{sup G}, and grain-boundary, J{sub c}{sup GB}, critical current densities for a series of ex situ processed YBCO films on a RABiTS template. Both critical current densities decrease as a function of thickness and the values of J{sub c}{sup G} and J{sub c}{sup GB} show a clear correlation which suggests the existence of an interaction between Abrikosov-Josephson vortices on the grain boundaries and Abrikosov vortices in the bulk of the grains. This opens the possibility to improve J{sub c}{sup GB} by optimizing the pinning capabilities of the grains.},
doi = {10.1063/1.2188044},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 12,
volume = 88,
place = {United States},
year = {2006},
month = {1}
}