XANES spectroscopy study of Pb(Ti, Zr)O3 ferroelectric thin films
Mira Mandeljc, Marija Kosec, S.P. Gabuda, S.G. Kozlova, S. B. Erenburg, and N.V. Bausk
TL;DR
This study uses XANES spectroscopy to analyze the crystallization and oxidation states in zirconium-rich Pb(Zr,Ti)O3 ferroelectric thin films, revealing partial lead reduction and the presence of stereoactive lone pairs.
Contribution
It provides new insights into the oxidation states and crystallization behavior of PLZT thin films using XANES spectroscopy.
Findings
Partial reduction of lead oxides to metallic Pb0 during crystallization
Presence of stereoactive 6s2 lone pairs in the material
Similar reduction effects observed with added PbO
Abstract
Thin films of zirconium-rich perovskites Pb1-3x/2 Lax Zr0.65 Ti0.35O3 (PLZT; x=0.095) were studied using X-ray absorption near-edge structure (XANES) spectroscopy. Is shown, that slow crystallization of the system is accompanied by partial reduction of lead oxides to a metal (Pb0) state. 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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Taxonomy
TopicsFerroelectric and Piezoelectric Materials · Glass properties and applications · X-ray Diffraction in Crystallography