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Journal articles
Chemistry of surface nanostructures in lead precursor-rich PbZr 0.52 Ti 0.48 O 3 sol-gel films
Abstract : We present a study of the chemistry of the nanostructured phase at the surface of lead zirconium titanate PbZr 0.52 Ti 0.48 O 3 (PZT) films synthesized by sol-gel method. In sol-gel synthesis, excess lead precursor is used to maintain the target stoichiometry. Surface nanostructures appear at 10% excess lead precursor whereas 30% excess precursor inhibits their formation. Using the surface-sensitive, quantitative X-ray photoelectron spectroscopy and glancing angle X-ray diffraction we have shown that the chemical composition of the nanostructures is ZrO 1.82−1.89 rather than pyrochlore often described in the literature. The presence of a possibly discontinuous layer of wide band gap ZrO 1.82−1.89 could be of importance in determining the electrical properties of PZT-based metal-insulator-metal heterostructures.
Cited literature [60 references]
https://hal-cea.archives-ouvertes.fr/cea-01272812
Contributor : Claire Mathieu <>
Submitted on : Thursday, February 11, 2016 - 1:51:54 PM
Last modification on : Thursday, June 11, 2020 - 5:04:06 PM
Long-term archiving on: : Saturday, November 12, 2016 - 6:34:16 PM
Contributor : Claire Mathieu <>
Submitted on : Thursday, February 11, 2016 - 1:51:54 PM
Last modification on : Thursday, June 11, 2020 - 5:04:06 PM
Long-term archiving on: : Saturday, November 12, 2016 - 6:34:16 PM
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