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

研究成果: 雜誌貢獻期刊論文同行評審

7 引文 斯高帕斯(Scopus)


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.

頁(從 - 到)4357-4362
期刊Physical Review B - Condensed Matter and Materials Physics
出版狀態已發佈 - 1999

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學


深入研究「O-1s x-ray near-edge absorption spectroscopy studies of La<sub>1.5-x</sub>Ca<sub>x</sub>Ba<sub>1.5</sub>Cu<sub>3</sub>O<sub>y</sub> and La<sub>1.5</sub>Ca<sub>x</sub>Ba<sub>1.5-x</sub>Cu<sub>3</sub>O<sub>y</sub>」主題。共同形成了獨特的指紋。