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Accurate determination of the composition of Y-Ba-Cu-O superconductor by spectrophotometry, gravimetry and flame AAS

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Abstract
A procedure for the accurate analytical determination of yttrium, barium and copper in an YBa2Cu3Ox superconductor is described. After dissolution of the material the concentration of Y and Cu was spectrophotometrically determined as an Y-Arsenazo III and a Cu-Nitroso-R-salt complex, respectively. Ba was determined either gravimetrically as BaCrO4, after precipitation using a K2CrO4 solution or using flame atomic absorption spectroscopy (AAS). An accuracy better than 0.7% and a coefficient of variation better then 1.2% are obtained. It is illustrated that this analytical procedure can be used to determine the composition of a bulk superconducting YBa2Cu3Ox sample. For determination of Ba in thin films we suggest the use of flame AAS, with an accuracy of 0.03% and a coefficient of variation of 1.7%.
Keywords
FLUORESCENCE ANALYSIS, PHOTOMETRIC-DETERMINATION, OXYGEN-CONTENT, BARIUM, YTTRIUM, COPPER, YBA2CU3O8-X, CERAMICS, OXIDES

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Chicago
Bruneel, Els, D Verbauwhede, David Van de Vyver, J Schaubroeck, Serge Hoste, and Isabel Van Driessche. 2005. “Accurate Determination of the Composition of Y-Ba-Cu-O Superconductor by Spectrophotometry, Gravimetry and Flame AAS.” Superconductor Science & Technology 18 (6): 907–911.
APA
Bruneel, Els, Verbauwhede, D., Van de Vyver, D., Schaubroeck, J., Hoste, S., & Van Driessche, I. (2005). Accurate determination of the composition of Y-Ba-Cu-O superconductor by spectrophotometry, gravimetry and flame AAS. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 18(6), 907–911.
Vancouver
1.
Bruneel E, Verbauwhede D, Van de Vyver D, Schaubroeck J, Hoste S, Van Driessche I. Accurate determination of the composition of Y-Ba-Cu-O superconductor by spectrophotometry, gravimetry and flame AAS. SUPERCONDUCTOR SCIENCE & TECHNOLOGY. 2005;18(6):907–11.
MLA
Bruneel, Els, D Verbauwhede, David Van de Vyver, et al. “Accurate Determination of the Composition of Y-Ba-Cu-O Superconductor by Spectrophotometry, Gravimetry and Flame AAS.” SUPERCONDUCTOR SCIENCE & TECHNOLOGY 18.6 (2005): 907–911. Print.
@article{332879,
  abstract     = {A procedure for the accurate analytical determination of yttrium, barium and copper in an YBa2Cu3Ox superconductor is described. After dissolution of the material the concentration of Y and Cu was spectrophotometrically determined as an Y-Arsenazo III and a Cu-Nitroso-R-salt complex, respectively. Ba was determined either gravimetrically as BaCrO4, after precipitation using a K2CrO4 solution or using flame atomic absorption spectroscopy (AAS). An accuracy better than 0.7\% and a coefficient of variation better then 1.2\% are obtained. It is illustrated that this analytical procedure can be used to determine the composition of a bulk superconducting YBa2Cu3Ox sample. For determination of Ba in thin films we suggest the use of flame AAS, with an accuracy of 0.03\% and a coefficient of variation of 1.7\%.},
  author       = {Bruneel, Els and Verbauwhede, D and Van de Vyver, David and Schaubroeck, J and Hoste, Serge and Van Driessche, Isabel},
  issn         = {0953-2048},
  journal      = {SUPERCONDUCTOR SCIENCE \& TECHNOLOGY},
  language     = {eng},
  number       = {6},
  pages        = {907--911},
  title        = {Accurate determination of the composition of Y-Ba-Cu-O superconductor by spectrophotometry, gravimetry and flame AAS},
  url          = {http://dx.doi.org/10.1088/0953-2048/18/6/019},
  volume       = {18},
  year         = {2005},
}

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