Effect of Ceramic Processing Methods on Photostrictive Ceramics

Authors: Poosanaas P.¹; Dogan A.²; Prasadarao A.V.³; Komarneni S.¹; Uchino K.¹

Source: Advanced Performance Materials, Volume 6, Number 1, May 1999 , pp. 57-69(13)

Publisher: Springer

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Abstract:

Lanthanum-modified lead zirconate titanate (PLZT) ceramics (3/52/48) doped with 0.5 at.% WO3 were prepared by three different processing methods, coprecipitation, sol-gel and conventional oxide mixing techniques, to investigate the effect of processing route on photovoltaic and photostrictive properties. The piezoelectric constant (d33) was observed to be independent of processing technique. Photovoltaic and photo-induced strain were found to get enhanced with decreasing grain size and increasing relative density. PLZT ceramics prepared by the coprecipitation route possess unique combination of favorable properties namely: high purity, higher degree of homogeneity, uniform distribution of doping, stoichiometric compositions, finer grain size and highest density. This resulted into enhanced photostrictive properties in coprecipitated PLZT ceramics.

Keywords: coprecipitation technique; photostriction; photovoltaic effect; PLZT ceramic; sol-gel technique; tungsten

Language: English

Document Type: Regular paper

Affiliations: 1: International Center for Actuators and Transducers, Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802 2: Ceramic Engineering Department, Anadolu University, Eskisehir, Turkiye 3: Department of Inorganic & Analytical Chemistry, Andhra University, India

Publication date: 1999-05-01