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Abstract
Thin films of zirconium-rich perovskites Pb1 − 3x/2La x Ti0.35Zr0.65O3(PLZT; x = 0.095) and PbTi0.7Zr0.3O3 were studied using X-ray absorption near-edge structure (XANES) spectroscopy. Is shown, that slow crystallization of the system is accompanied by essential change of PbL(3)-edge fine structure indicating that perovskite thin film band structure is sensitive of Ti/Zr ratio. The same results were found in the samples of the same composition with addition of 30% mol of PbO. The evidence for stereo active 6s2 lone-pair is discussed.
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ACKNOWLEDGEMENTS
This work was supported by Division of chemistry and material sciences of RAS (Project No 15 of Program 4.1), and by RFBR (Grants 02-03-32816 and 02-03-32319). Support from the Ministry of Education, Science and Sports of the Republic of Slovenia within the National Research Program is also acknowledged.