共沉淀法制备复合钙钛矿结构PLZST的研究

无机材料学报

共沉淀法制备复合钙钛矿结构PLZST的研究

薛丽红¹; 张一玲²; 李强¹; 郭泉泳¹; 刘锐¹

1. 清华大学化学系; 2. 清华大学材料系, 北京 100084

收稿日期:2003-05-26 修回日期:2003-07-07 出版日期:2004-05-20 网络出版日期:2004-05-20

Preparation of PLZST with Complex Perovskite Structure by Coprecipitation

XUE Li-Hong¹; ZHANG Yi-Ling²; LI Qiang¹; GUO Quan-Yong; LIU Rui¹

1.Department of Chemistry Tsinghua University; Beijing 100084; China; 2. Department of Materials.Science and Engineering Tsinghua University; Beijing 100084, China

Received:2003-05-26 Revised:2003-07-07 Published:2004-05-20 Online:2004-05-20

摘要/Abstract

摘要： 用改进的化学共沉淀法制备PLZST前驱体,讨论了共沉淀的最佳pH值范围.通过DTA-TG和XRD详细研究相组成随煅烧温度的变化,并通过和固相合成PLZST多晶料的条件比较可知,共沉淀法合成PLZST多晶料具有纯度高、组份均匀、合成温度低等特点.研究表明在700℃低温下即能合成纯钙钛矿相PLZST多晶料.利用化学分析法测定不同温度下合成的PLZST的铅含量表明低温下合成的PLZST,铅挥发量极少,不会由于铅的挥发造成计量比的改变和形成杂相.

关键词: 化学共沉淀, PLZST, 钙钛矿相

Abstract: A modified chemical coprecipitation route to synthesize homogeneous lead lanthanum zirconate stannate titanate (PLZST) precursors was described. The formation process of PLZST from the
precursors was monitored by thermal analysis, and the phases were characterized by X-ray diffraction. Compared with the solid-state reaction of constituent oxides, the PLZST powders prepared by coprecipitation
have high purity, homogeneous and low synthesis temperature. The formation temperature of single perovskite PLZST is as low as 700℃ in this method of preparation. Pb content analyzed by
chemical methods indicates that the loss of Pb in PLZST synthesized at low temperature is minimal.

Key words: coprecipitation, PLZST, perovskite

中图分类号:

TQ174

薛丽红,张一玲,李强,郭泉泳,刘锐. 共沉淀法制备复合钙钛矿结构PLZST的研究[J]. 无机材料学报.

XUE Li-Hong,ZHANG Yi-Ling,LI Qiang,GUO Quan-Yong,LIU Rui. Preparation of PLZST with Complex Perovskite Structure by Coprecipitation[J]. Journal of Inorganic Materials.

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