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CeO₂ buffer layers for HTSC via an aqueous sol-gel method: chemistry and microstructure

Nigel Van de Velde UGent, David Van de Vyver, Oliver Brünkahl, Serge Hoste UGent, Els Bruneel UGent and Isabel Van Driessche UGent (2010) EUROPEAN JOURNAL OF INORGANIC CHEMISTRY. p.233-241
abstract
During the last decade the focus in superconductivity research has shifted towards the manufacturing of easy-to-handle superconductors, because of their high usability in electronic applications in comparison to bulky ceramics. This article reviews our recent progress made in the buffer layer architecture of such a coated conductor, focusing on CeO2 thin films prepared by an aqueous sol-gel method and deposited via dip-coating. Starting from water-soluble cerium(III)nitrate precursors, we were able to deposit films showing a very high degree of [002] orientation depending on the film characteristics and synthesis conditions. The formation and stability of the chemical complexes in the solution was studied via potentiometric titrations. The main influencing parameters on attaining the desired texture seem to be the ambient Ar-(5%)H2 atmosphere and the thickness of the synthesized buffer layers. The microstructure of the thin films deposited on metallic tapes was controlled via the incorporation of doping elements. This research allowed us to achieve a 50nm thick CeO2 film, showing a very high degree of [002] orientation and exhibiting a low surface roughness. Our easy-to-use, environmentally friendly strategy could contribute in the spreading of coated conductors towards everyday applications.
Please use this url to cite or link to this publication:
author
organization
alternative title
CeO2 buffer layers for HTSC via an aqueous sol-gel method : chemistry and microstructure
year
type
journalArticle (original)
publication status
published
subject
keyword
Cerium oxide, Complex formation, Layered compounds, sol-gel processes, CeO2, species distribution, superconductors, buffer layer, CHEMICAL SOLUTION DEPOSITION, THIN-FILMS, CONDUCTORS, SUBSTRATE, COMPUTER, OXIDES
journal title
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Eur. J. Inorg. Chem.
issue
2
pages
233 - 241
Web of Science type
Article
Web of Science id
000274281100004
JCR category
CHEMISTRY, INORGANIC & NUCLEAR
JCR impact factor
2.909 (2010)
JCR rank
11/43 (2010)
JCR quartile
2 (2010)
ISSN
1434-1948
DOI
10.1002/ejic.200900257
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
598528
handle
http://hdl.handle.net/1854/LU-598528
date created
2009-04-22 16:09:45
date last changed
2012-10-29 11:25:06
@article{598528,
  abstract     = {During the last decade the focus in superconductivity research has shifted towards the manufacturing of easy-to-handle superconductors, because of their high usability in electronic applications in comparison to bulky ceramics. This article reviews our recent progress made in the buffer layer architecture of such a coated conductor, focusing on CeO2 thin films prepared by an aqueous sol-gel method and deposited via dip-coating. Starting from water-soluble cerium(III)nitrate precursors, we were able to deposit films showing a very high degree of [002] orientation depending on the film characteristics and synthesis conditions. The formation and stability of the chemical complexes in the solution was studied via potentiometric titrations.
The main influencing parameters on attaining the desired texture seem to be the ambient Ar-(5\%)H2 atmosphere and the thickness of the synthesized buffer layers. The microstructure of the thin films deposited on metallic tapes was controlled via the incorporation of doping elements. This research allowed us to achieve a 50nm thick CeO2 film, showing a very high degree of [002] orientation and exhibiting a low surface roughness. Our easy-to-use, environmentally friendly strategy could contribute in the spreading of coated conductors towards everyday applications.},
  author       = {Van de Velde, Nigel and Van de Vyver, David and Br{\"u}nkahl, Oliver and Hoste, Serge and Bruneel, Els and Van Driessche, Isabel},
  issn         = {1434-1948},
  journal      = {EUROPEAN JOURNAL OF INORGANIC CHEMISTRY},
  keyword      = {Cerium oxide,Complex formation,Layered compounds,sol-gel processes,CeO2,species distribution,superconductors,buffer layer,CHEMICAL SOLUTION DEPOSITION,THIN-FILMS,CONDUCTORS,SUBSTRATE,COMPUTER,OXIDES},
  language     = {eng},
  number       = {2},
  pages        = {233--241},
  title        = {CeO\unmatched{2082} buffer layers for HTSC via an aqueous sol-gel method: chemistry and microstructure},
  url          = {http://dx.doi.org/10.1002/ejic.200900257},
  year         = {2010},
}

Chicago
Van de Velde, Nigel, David Van de Vyver, Oliver Brünkahl, Serge Hoste, Els Bruneel, and Isabel Van Driessche. 2010. “CeO₂ Buffer Layers for HTSC via an Aqueous Sol-gel Method: Chemistry and Microstructure.” European Journal of Inorganic Chemistry (2): 233–241.
APA
Van de Velde, N., Van de Vyver, D., Brünkahl, O., Hoste, S., Bruneel, E., & Van Driessche, I. (2010). CeO₂ buffer layers for HTSC via an aqueous sol-gel method: chemistry and microstructure. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, (2), 233–241.
Vancouver
1.
Van de Velde N, Van de Vyver D, Brünkahl O, Hoste S, Bruneel E, Van Driessche I. CeO₂ buffer layers for HTSC via an aqueous sol-gel method: chemistry and microstructure. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY. 2010;(2):233–41.
MLA
Van de Velde, Nigel, David Van de Vyver, Oliver Brünkahl, et al. “CeO₂ Buffer Layers for HTSC via an Aqueous Sol-gel Method: Chemistry and Microstructure.” EUROPEAN JOURNAL OF INORGANIC CHEMISTRY 2 (2010): 233–241. Print.