PMN-PT弛豫铁电粉体的溶胶-凝胶法制备及其性质

Preparation and Characterization of PMN-PT Relax Ferroelectric Powders by Sol-Gel Method

以无机盐或氧化物Ｎｂ２Ｏ５、ＭｇＯ、ＴｉＣｌ４和Ｐｂ（ＡＣ）２、３Ｈ２Ｏ为原材料，柠檬酸和ＥＤＴＡ为复合螫合剂，乙二醇为溶剂，分别制备Ｎｂ、Ｍｇ－Ｎｂ、Ｔｉ和Ｐｂ的有机化合物前驱液，采用溶胶－凝胶工艺制备ＰＭＮ－ＰＴ弛豫铁电陶瓷粉体及其烧结体．讨论了制备工艺和螯合剂等对金属有机化合物溶液的性质、材料物相形成和介电性能的影响．

PMN-PT relax ferroelectric fine powders were prepared by a sol-gel routes with inorganic compounds, Nb2O5, TiCl4 and Pb(AC)(2).3H(2)O as raw materials, citric acid and EDTA as co-chelate and ethylene glycol as solvent. The effects of processing technology and complex/chelate on the properties of organic compounds precursors, the powders synthesis, the phases formation and dielectric properties were discussed.