TY - JOUR
T1 - Photostriction of Sol-Gel Processed PLZT Ceramics
AU - Poosanaas, Patcharin
AU - Dogan, A.
AU - Prasadarao, A. V.
AU - Komarneni, S.
AU - Uchino, K.
N1 - Funding Information:
This work is partially supported by Army Research Office through Grant No. DAAL 03-92-G-0244. One of the authors (P. Poosanaas) would like to acknowledge the Royal Thai Government and Dr. Harit Sutabutr from the National Metal and Materials Technology Center (Thailand) for granting a MOSTE fellowship.
PY - 1997
Y1 - 1997
N2 - 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.
AB - 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.
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U2 - 10.1023/a:1009906600737
DO - 10.1023/a:1009906600737
M3 - Article
AN - SCOPUS:0001170062
SN - 1385-3449
VL - 1
SP - 105
EP - 111
JO - Journal of Electroceramics
JF - Journal of Electroceramics
IS - 1
ER -
