Photostriction of Sol-Gel Processed PLZT Ceramics

Patcharin Poosanaas, A. Dogan, A. V. Prasadarao, S. Komarneni, K. Uchino

Research output: Contribution to journalArticle

33 Scopus citations

Abstract

Lanthanum-modified lead zirconate titanate (PLZT) ceramic materials have gained considerable attention due to their photostriction, which is the superposition of photovoltaic and piezoelectric effects. However, the photovoltaic effect and the induced strain response are also influenced by the fabrication and processing conditions. The PLZT ceramics produced by conventional oxide mixing process exhibit moderate photostrictive properties due to the inhomogeneous distribution of impurities. In this study, ceramics of PLZT (3/52/48) doped with WO3 and Nb2O5 were prepared by sol-gel technique using lead(II) acetate trihydrate, lanthanum(III) acetylacetonate hydrate, Zr, Ti, Nb, and W alkoxides. It was found that WO3 and Nb2O5 were effective in suppressing the grain growth of PLZT, which lead to the enhancement of photovoltaic and photostrictive properties. Photovoltaic and photostrictive responses showed a maximum for samples with 0.5 at% WO3 doped sol-gel PLZT. It has been shown that the sol-gel derived PLZT ceramics with proper density possess the possibility of enhancing the photostriction over ceramics produced by conventional oxide mixing process.

Original languageEnglish (US)
Pages (from-to)105-111
Number of pages7
JournalJournal of Electroceramics
Volume1
Issue number1
DOIs
StatePublished - Jan 1 1997

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

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