O-1s x-ray near-edge absorption spectroscopy studies of La1.5-xCaxBa1.5Cu3Oy and La1.5CaxBa1.5-xCu3Oy

Y. F. Song, C. N. Chang, H. C.I. Kao, C. H. Hsieh, H. F. Liu, H. D. Lin, W. W. Huang

Research output: Contribution to journalArticle

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Abstract

The O-1s x-ray near-edge-absorption spectra of La1.5-xCaxBa1.5Cu3Oy have been measured by using synchrotron radiation. Their spectral features of the pre-edge spectra indicate that there is an electronic structure change similar to the effect of Pr in Y1-xPrxBa2Cu3O7-δ; the holes on the CuO2 planes increase with the doping concentration of Ca ions; not all the excess oxygen (for y≧7.0) in the basal plane supply holes; and there is a sign of increasing, rather than decreasing, the holes around the apical oxygen O(4) with the increase of the replacement of Ba by La on the Ba sites, an indication of a redistribution of holes.

Original languageEnglish
Pages (from-to)4357-4362
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume60
Issue number6
DOIs
Publication statusPublished - 1999 Jan 1

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Absorption spectroscopy
absorption spectroscopy
Oxygen
X rays
Synchrotron radiation
Electronic structure
Absorption spectra
x rays
Doping (additives)
Ions
oxygen
synchrotron radiation
indication
electronic structure
absorption spectra
ions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

O-1s x-ray near-edge absorption spectroscopy studies of La1.5-xCaxBa1.5Cu3Oy and La1.5CaxBa1.5-xCu3Oy. / Song, Y. F.; Chang, C. N.; Kao, H. C.I.; Hsieh, C. H.; Liu, H. F.; Lin, H. D.; Huang, W. W.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 60, No. 6, 01.01.1999, p. 4357-4362.

Research output: Contribution to journalArticle

Song, Y. F. ; Chang, C. N. ; Kao, H. C.I. ; Hsieh, C. H. ; Liu, H. F. ; Lin, H. D. ; Huang, W. W. / O-1s x-ray near-edge absorption spectroscopy studies of La1.5-xCaxBa1.5Cu3Oy and La1.5CaxBa1.5-xCu3Oy. In: Physical Review B - Condensed Matter and Materials Physics. 1999 ; Vol. 60, No. 6. pp. 4357-4362.
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abstract = "The O-1s x-ray near-edge-absorption spectra of La1.5-xCaxBa1.5Cu3Oy have been measured by using synchrotron radiation. Their spectral features of the pre-edge spectra indicate that there is an electronic structure change similar to the effect of Pr in Y1-xPrxBa2Cu3O7-δ; the holes on the CuO2 planes increase with the doping concentration of Ca ions; not all the excess oxygen (for y≧7.0) in the basal plane supply holes; and there is a sign of increasing, rather than decreasing, the holes around the apical oxygen O(4) with the increase of the replacement of Ba by La on the Ba sites, an indication of a redistribution of holes.",
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AU - Chang, C. N.

AU - Kao, H. C.I.

AU - Hsieh, C. H.

AU - Liu, H. F.

AU - Lin, H. D.

AU - Huang, W. W.

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AB - The O-1s x-ray near-edge-absorption spectra of La1.5-xCaxBa1.5Cu3Oy have been measured by using synchrotron radiation. Their spectral features of the pre-edge spectra indicate that there is an electronic structure change similar to the effect of Pr in Y1-xPrxBa2Cu3O7-δ; the holes on the CuO2 planes increase with the doping concentration of Ca ions; not all the excess oxygen (for y≧7.0) in the basal plane supply holes; and there is a sign of increasing, rather than decreasing, the holes around the apical oxygen O(4) with the increase of the replacement of Ba by La on the Ba sites, an indication of a redistribution of holes.

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