PURPOSE:To improve an electrooptical constant by keeping a composition of burned article in a ratio of La to specific Pb and La and Zr to specific T and Zr. CONSTITUTION:Each oxide powder of PbO, La2O3, ZrO2 and TiO2 is blended using a ball mill, etc., so as to be 7.75-8.5mol% in a ratio of La to Pb and La and 67.5-72.5mol% in Zr to Ti and Zr. The blend powder is calcined and further pulverized with a ball mill and dried to provide a PLZT raw material powder. The raw material powder is blended with a binder and formed into a formed article by monoaxial pressure forming, etc., and the formed article is sintered at 1100-1250 deg.C in 50-300kg/cm2 pressure and O2 atmosphere to provide the PLZT for electrooptical material.
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机译：用途：通过保持烧成物的成分与La对特定Pb的比例以及La和Zr对特定T和Zr的比例保持一致，以提高电光学常数。组成：PbO，La2O3，ZrO2和TiO2的每种氧化物粉末均用球磨机等混合，以La与Pb和La的比例为7.75-8.5mol％，Zr与Zr的比例为67.5-72.5mol％。钛和锆。将共混物粉末煅烧并用球磨机进一步粉碎，并干燥以提供PLZT原料粉末。将原料粉末与粘合剂混合并通过单轴压力成型等形成成型体，并将成型体在1100-1250℃，50-300kg / cm 2压力和O 2气氛下烧结至提供用于电光材料的PLZT。
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