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Title: Low-cost Approaches for Flux-pinning Enhancements in YBCO Films Using Solution Processing

Abstract

Nanoparticles of several oxides have been synthesized using reverse micelle process. Microemulsions containing n-octane as the oil phase, cetyl trimethylammonium bromide and 1-butanol as surfactants, and an aqueous solution of metal nitrates and sodium hydroxide were used as the reaction medium. The nanoparticles obtained were characterized using differential thermal analysis, x-ray diffraction, and transmission electron microscopy. The application of these particles for flux-pinning enhancements has been studied.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. 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:
1021934
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: Applied Superconducting Conference, Seattle, WA, USA, 20060827, 20060901
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; AQUEOUS SOLUTIONS; BROMIDES; COST; DIFFERENTIAL THERMAL ANALYSIS; FILMS; HIGH-TC SUPERCONDUCTORS; MAGNETIC FLUX; MEETINGS; METALS; MICROEMULSIONS; NANOSTRUCTURES; NITRATES; OXIDES; PARTICLES; PROCESSING; SODIUM HYDROXIDES; SURFACTANTS; TRANSMISSION ELECTRON MICROSCOPY; USES; X-RAY DIFFRACTION

Citation Formats

Sathyamurthy, Srivatsan, Leonard, Keith J, Bhuiyan, Md S, Aytug, Tolga, Kang, Sukill, Martin, Patrick M, Hunt, Rodney Dale, and Paranthaman, Mariappan Parans. Low-cost Approaches for Flux-pinning Enhancements in YBCO Films Using Solution Processing. United States: N. p., 2007. Web.
Sathyamurthy, Srivatsan, Leonard, Keith J, Bhuiyan, Md S, Aytug, Tolga, Kang, Sukill, Martin, Patrick M, Hunt, Rodney Dale, & Paranthaman, Mariappan Parans. Low-cost Approaches for Flux-pinning Enhancements in YBCO Films Using Solution Processing. United States.
Sathyamurthy, Srivatsan, Leonard, Keith J, Bhuiyan, Md S, Aytug, Tolga, Kang, Sukill, Martin, Patrick M, Hunt, Rodney Dale, and Paranthaman, Mariappan Parans. Mon . "Low-cost Approaches for Flux-pinning Enhancements in YBCO Films Using Solution Processing". United States. doi:.
@article{osti_1021934,
title = {Low-cost Approaches for Flux-pinning Enhancements in YBCO Films Using Solution Processing},
author = {Sathyamurthy, Srivatsan and Leonard, Keith J and Bhuiyan, Md S and Aytug, Tolga and Kang, Sukill and Martin, Patrick M and Hunt, Rodney Dale and Paranthaman, Mariappan Parans},
abstractNote = {Nanoparticles of several oxides have been synthesized using reverse micelle process. Microemulsions containing n-octane as the oil phase, cetyl trimethylammonium bromide and 1-butanol as surfactants, and an aqueous solution of metal nitrates and sodium hydroxide were used as the reaction medium. The nanoparticles obtained were characterized using differential thermal analysis, x-ray diffraction, and transmission electron microscopy. The application of these particles for flux-pinning enhancements has been studied.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Conference:
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  • Significant enhancements in flux-pinning were obtained for Dy-doped, YBCO films via a metal-organic deposition (MOD) process on rolling-assisted biaxially textured substrates (RABiTS). It has been reported previously that incorporation of excess rare-earth ions during the MOD process, results in improvement of Jc for H//c, however, a decrease in Jc for H//ab is observed. We report here that by altering the processing conditions the reduction in the magnitude of the current peak for H//ab can be minimized while significantly enhancing the random pinning at all field orientations. The result is a YBCO film with significantly reduced anisotropy compared to the typicalmore » YBCO films prepared by the MOD process. This is accomplished by incorporating both a high density of stacking faults and (Dy, Y)2O3 nanoparticles which result in the strong pinning for H//ab and a broad pinning peak for H//c respectively.« less
  • The basal plane transport critical current density J{sub c} of YBCO epitaxial thin films is strongly anisotropic, leading to large enhancements of J{sub c} when H is precisely parallel to the copper-oxygen planes. Experimental evidence shows that the enhancement is a bulk phenomenon, and the orientation dependence is compared with a model of intrinsic flux pinning'' by the layered crystal structure. 7 refs., 2 figs.
  • Systematic effects of Zr additions on the structural and flux pinning properties of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) films deposited by metal-organic chemical vapor deposition (MOCVD) have been investigated. Detailed characterization, conducted by coordinated transport, x-ray diffraction, scanning and transmission electron microscopy analyses, and imaging Raman microscopy have revealed trends in the resulting property/performance correlations of these films with respect to varying mole percentages (mol%) of added Zr. For compositions {le} 7.5 mol%, Zr additions lead to improved in-field critical current density, as well as extra correlated pinning along the c-axis direction of the YBCO films via the formation ofmore » columnar, self-assembled stacks of BaZrO{sub 3} nanodots.« less
  • Systematic effects of Zr additions on the structural and flux pinning properties of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) films deposited by metal-organic chemical vapor deposition (MOCVD) have been investigated. Detailed characterization, conducted by coordinated transport, x-ray diffraction, scanning and transmission electron microscopy analyses, and imaging Raman microscopy have revealed trends in the resulting property/performance correlations of these films with respect to varying mole percentages (mol%) of added Zr. For compositions {le} 7.5 mol%, Zr additions lead to improved in-field critical current density, as well as extra correlated pinning along the c-axis direction of the YBCO films via the formation ofmore » columnar, self-assembled stacks of BaZrO{sub 3} nanodots.« less