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Fluorine-free water-based sol-gel deposition of highly epitaxial YBa2Cu3O7-δ films

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Abstract
In this work a fluorine-free sol-gel method based on low-cost materials and water as primary solvent is developed, resulting in a sustainable superconducting film. Using a 0.6 M 'AWAT' precursor (M-acetates, water, acetic acid and tri-ethanolamine, patent pending) YBa2Cu3O7-delta (YBCO) films were dip coated on SrTiO3 (STO) single-crystal substrates. After gelation at 60 degrees C, the amorphous gel was transformed to the desired crystalline superconducting phase. Sintering was conducted at 815 degrees C under a 200 ppm oxygen partial pressure, followed by a pure oxygen annealing at 400 degrees C. Highly textured (Delta omega = 0.2 degrees, Delta phi = 6.5 degrees) YBCO films with a T-c,T- onset of 92 K, a Delta T-c of 5 K, a J(c) of 0.55 MA cm(-2) and an I-c of 25 A cm(-1) width at 77.3 K and self-field were achieved. Experimental results on film synthesis, morphology, microstructure and superconducting properties are presented.
Keywords
COATED CONDUCTORS, BUFFER LAYERS, YBCO FILMS, HIGH-TC SUPERCONDUCTORS, SUPERCONDUCTING THIN-FILMS, CHEMICAL SOLUTION DEPOSITION, PROGRESS, EVAPORATION, WIRES, MOD

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MLA
Vermeir, Pieter, Iwein Cardinael, Michael Bäcker, et al. “Fluorine-free Water-based Sol-gel Deposition of Highly Epitaxial YBa2Cu3O7-δ Films.” SUPERCONDUCTOR SCIENCE & TECHNOLOGY 22.7 (2009): n. pag. Print.
APA
Vermeir, Pieter, Cardinael, I., Bäcker, M., Schaubroeck, J., Schacht, E., Hoste, S., & Van Driessche, I. (2009). Fluorine-free water-based sol-gel deposition of highly epitaxial YBa2Cu3O7-δ films. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 22(7).
Chicago author-date
Vermeir, Pieter, Iwein Cardinael, Michael Bäcker, Jo Schaubroeck, Etienne Schacht, Serge Hoste, and Isabel Van Driessche. 2009. “Fluorine-free Water-based Sol-gel Deposition of Highly Epitaxial YBa2Cu3O7-δ Films.” Superconductor Science & Technology 22 (7).
Chicago author-date (all authors)
Vermeir, Pieter, Iwein Cardinael, Michael Bäcker, Jo Schaubroeck, Etienne Schacht, Serge Hoste, and Isabel Van Driessche. 2009. “Fluorine-free Water-based Sol-gel Deposition of Highly Epitaxial YBa2Cu3O7-δ Films.” Superconductor Science & Technology 22 (7).
Vancouver
1.
Vermeir P, Cardinael I, Bäcker M, Schaubroeck J, Schacht E, Hoste S, et al. Fluorine-free water-based sol-gel deposition of highly epitaxial YBa2Cu3O7-δ films. SUPERCONDUCTOR SCIENCE & TECHNOLOGY. 2009;22(7).
IEEE
[1]
P. Vermeir et al., “Fluorine-free water-based sol-gel deposition of highly epitaxial YBa2Cu3O7-δ films,” SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 22, no. 7, 2009.
@article{1090089,
  abstract     = {In this work a fluorine-free sol-gel method based on low-cost materials and water as primary solvent is developed, resulting in a sustainable superconducting film. Using a 0.6 M 'AWAT' precursor (M-acetates, water, acetic acid and tri-ethanolamine, patent pending) YBa2Cu3O7-delta (YBCO) films were dip coated on SrTiO3 (STO) single-crystal substrates. After gelation at 60 degrees C, the amorphous gel was transformed to the desired crystalline superconducting phase. Sintering was conducted at 815 degrees C under a 200 ppm oxygen partial pressure, followed by a pure oxygen annealing at 400 degrees C. Highly textured (Delta omega = 0.2 degrees, Delta phi = 6.5 degrees) YBCO films with a T-c,T- onset of 92 K, a Delta T-c of 5 K, a J(c) of 0.55 MA cm(-2) and an I-c of 25 A cm(-1) width at 77.3 K and self-field were achieved. Experimental results on film synthesis, morphology, microstructure and superconducting properties are presented.},
  articleno    = {075009},
  author       = {Vermeir, Pieter and Cardinael, Iwein and Bäcker, Michael and Schaubroeck, Jo and Schacht, Etienne and Hoste, Serge and Van Driessche, Isabel},
  issn         = {0953-2048},
  journal      = {SUPERCONDUCTOR SCIENCE & TECHNOLOGY},
  keywords     = {COATED CONDUCTORS,BUFFER LAYERS,YBCO FILMS,HIGH-TC SUPERCONDUCTORS,SUPERCONDUCTING THIN-FILMS,CHEMICAL SOLUTION DEPOSITION,PROGRESS,EVAPORATION,WIRES,MOD},
  language     = {eng},
  number       = {7},
  pages        = {5},
  title        = {Fluorine-free water-based sol-gel deposition of highly epitaxial YBa2Cu3O7-δ films},
  url          = {http://dx.doi.org/10.1088/0953-2048/22/7/075009},
  volume       = {22},
  year         = {2009},
}

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