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 show ed 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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Bibliography
Chiou, B.-S. and Kno, J.N., 1990, The Preparation of PLZT Ceramics from a Sol-Gel Process, J. Elec. Mater., 19(4), 393–397.
Chu, S.-Y. and Uchino, K., 1995, Photostrictive Effect in PLZT-Based Ceramics and its Application, Ferroelectrics, 174, 185–196.
Chu, S.-Y., Ye, Z., and Uchino, K., 1994, Photovoltaic Effect for the Linearly Polarized Light in (Pb, La) (Zr, Ti) O3 Ceramics, Smart Mater. Struct., 3, 114–117.
Rahaman, M.N., 1995, Ceramic Processing and Sintering, Marcel Dekker Inc., New York, 207.
Sada, T., Inoue, M., and Uchino, K., 1987, Photostriction in PLZT Ceramics, J. Ceram. Soc. Jpn., Inter. Ed., 95, 499–504.
Uchino, K. and Aizawa, M., 1985, Photostrictive Actuator Using PLZT Ceramics, Jpn. J. Appl. Phys. Suppl., 24, 139–141.
Uchino, K., Aizawa, M., and Nomura, S., 1985, Photostrictive Effect in (Pb, La) (Zr, Ti) O3, Ferroelectrics, 64, 199–208.
Xu, Y., 1991, Ferroelectric Materials and Their Application, Elsevier Science Pub. Co., New York, 164.
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Dogan, A., Prasadarao, A.V., Uchino, K. et al. Photostriction of Sol–Gel Processed PLZT Ceramics. Journal of Electroceramics 1, 105–111 (1997). https://doi.org/10.1023/A:1009906600737
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DOI: https://doi.org/10.1023/A:1009906600737