Extended x-ray absorption fine structure determination of local structure in sol-gel-derived lead titanate, lead zirconate, and lead zirconate titanate
- Department of Materials Science and Engineering, Seitz Materials Research Laboratory and Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)
We report extended x-ray absorption fine structure (EXAFS) measurements for partially heat-treated gels in the lead zirconate titanate system (PZT). Self-consistent results obtained from the titanium and zirconium {ital K}-edges and the lead {ital L}{sub III}-edge were used to determine bonding pathways between cations. For lead titanate (PT) and PZT gels, separate networks of predominantly Ti--O--Ti, Zr--O--Zr and Pb--O--Pb linkages were observed. For lead zirconate (PZ) gels, both Zr--O--Pb and Zr--O--Zr linkages were observed. The results indicate heterogeneity at the molecular level. These findings are discussed in terms of the evolution of structure for PZT materials prepared by our sol-gel method.
- Research Organization:
- University of Illinois
- DOE Contract Number:
- FG02-91ER45439
- OSTI ID:
- 54907
- Journal Information:
- Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 6 Vol. 10; ISSN JMREEE; ISSN 0884-2914
- Country of Publication:
- United States
- Language:
- English
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