Energy Shift and Hole Localization in Y1-xPrxBa2Cu3O7-δ From the 0 1s X-ray Near-Edge-Absorption Spectroscopy

C. N. Chang；Y. F. Song；C. H. Hsieh；H. F. Liu；H.-C. I. Kao；H. C. Yang

Chinese Journal of Physics

37卷1期（1999 / 02 / 01）

98 - 109

英文

High-resolution 0 1s x-ray near-edge-absorption spectra of Y1-xPrxBa2Cu3O7-δ (abbreviated as Prx-123) have been measured. The spectra indicate that the Pr ions not only affect the spectral energies but also the spectral profiles. The binding energy of the 1s state of the oxygen in the CuO2 planes is suggested to become smaller when Y is substituted by Pr. The number of holes derived from the spectral intensity designated the transition of 0 1s to the valence band suggests that the fraction of Pr^4+ is about 0.3. The holes residing in Prx-123 are demonstrated to be localized and completed when Pr concentration is increased beyond x ≌ 0.5. The result of hole localization is consistent with a model based on the Pr 4f - 0 2p hybridization.

1. 徐竺君(2017)。一次性設備的最佳設計與可靠度抽樣計畫。淡江大學統計學系應用統計學碩士班學位論文。2017。1-45。 
2. 王敦儒(2018)。應用於有線及無線系統以數位時間轉換器實現之鎖相迴路及除頻器設計。臺灣大學電子工程學研究所學位論文。2018。1-88。 
3. 張家豪(2017)。類沸石咪唑骨架(ZIF-8)薄膜:介面合成法之設計及氣體(二氧化碳/氮氣)分離效能之提升。國立臺灣大學化學工程學系學位論文。2017。1-75。 
4. 孫彥儒(2016)。以(1R,2R)-反式-1,2-二胺基環己烷衍生物官能基化介孔材料SBA-15催化不對稱Aldol反應之應用。國立臺灣大學化學系學位論文。2016。1-92。 
5. 沈雍傑(2016)。利用黑雲母催化芬頓及過硫酸鹽氧化反應降解染料廢水。義守大學土木與生態工程學系學位論文。2016。1-89。