Synthesis and crystallization behavior of lead titanate from oxide precursors by a hydrothermal route

被引：31

作者：

Chen, XL ^{[1
]}

Fan, HQ ^{[1
]}

Liu, LJ ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Sch Mat Sci & Engn, Xian 710072, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2005年 / 284卷 / 3-4期

关键词：

characterization; crystal morphology; perovskite; titanium compounds; ferroelectric materials;

D O I：

10.1016/j.jcrysgro.2005.07.025

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Lead titanate (PbTiO3, PT) crystals were synthesized from oxides, namely PbO and TiO2, by a hydrothermal route, in which the precursors were heated to 150 degrees C with durations from 8 to 32 h. The homogeneous PbTiO3 crystals with a single perovskite structure were obtained through the synthesis route. The influences of the Pb/Ti ratio, the KOH concentration, and the reaction time on the morphology and microstructure of PbTiO3 crystals were investigated. By surveying the variations of the crystal micrographs, another formation mechanism could be proposed, as the following: dissolution-precipitation (nucleation)-crystal growth-recrystallization. Moreover, crystal growth was controlled by a layer-by-layer mode when the reaction time was prolonged. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：434 / 439

页数：6

共 12 条

[1]

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[2] Kinetics and mechanisms of hydrothermal synthesis of barium titanate [J].