Direct amorphous-to-cubic perovskite phase transformation for lead titanate

被引：23

作者：

Leite, ER ^{[1
]}

Paris, EC ^{[1
]}

Longo, E ^{[1
]}

Varela, JA ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Chem, Lab Interdisciplinar Eletroquim & Ceram, BR-13565905 Sao Carlos, SP, Brazil

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2000年 / 83卷 / 06期

关键词：

D O I：

10.1111/j.1151-2916.2000.tb01427.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The phase evolution of lead titanate processed by the polymeric precursor method was investigated by thermal analysis, X-ray diffraction, and high-resolution transmission electron microscopy, The results showed that the cubic perovskite PbTiO3, (PT) phase is formed from an inorganic amorphous precursor at a temperature of 444 degrees C. A gradual transition from cubic to tetragonal perovskite PT was observed with the increase of calcination time at this temperature. HRTEM results showed that the cubic PT particles have a size of around 5 nm. The identification of cubic PT as an intermediate phase supports the hypothesis that the chemical homogeneity was kept at the molecular level during the synthesis process, with no cation segregation.

引用

页码：1539 / 1541

页数：3

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