Microstructural characterization of sol-gel derived lead titanate deposited on silica

Joseph M. Schwartz, Lorraine Falter Francis, Lanny D. Schmidt

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

The microstructural evolution of lead titanate prepared by a sol-gel method was examined using transmission electron microscopy (TEM) following treatments in air at progressively higher temperatures. TEM specimens were prepared by spin coating a film or dispersing particles onto specimen grids coated with SiO2 or SiO2 with a barrier layer. The effects of different barrier materials, thermal treatment conditions, and the addition of platinum particles were examined. Lead titanate formed crystalline perovskite at ≈ 550-600°C on air support materials examined. On SiO2 supports, the pyrochlore phase formed at lower temperatures and converted partially to perovskite at higher temperatures. Barrier layers of TiO2 , Al2O3 and polyimide prevented pyrochlore formation.

Original languageEnglish (US)
Pages (from-to)281-286
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume310
DOIs
StatePublished - Jan 1 1993
EventProceedings of the 1993 Spring Meeting of the Materials Research Society - San Francisco, CA, USA
Duration: Apr 12 1993Apr 16 1993

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