Bi4Ti3O12 thin films from mixed bismuth-titanium alkoxides

被引：0

作者：

F. Soares-Carvalho

P. Thomas

J. P. Mercurio

B. Frit

S. Parola

机构：

[1] URA 320 CNRS,Laboratoire de Matériaux Céramiques et Traitements de Surfaces

[2] URA 426 CNRS,Laboratoire de Chimie Moléculaire

来源：

Journal of Sol-Gel Science and Technology | 1997年 / 8卷

关键词：

sol-gel; bismuth titanate; spin-coating; thin films; ferroelectric;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Bi4Ti3O12 thin films were obtained by the sol-gel method. The precursor solution was prepared by allowing the two metallic alkoxides, Bi(OC2H4OCH3)3 and Ti(OC2H4OCH3)4, to react in 2-methoxy-ethanol to form the mixed alkoxide. This stable sol was deposited by spin-coating onto platinized silicon substrates. X-Ray diffraction patterns indicate that the perovskite initial crystallization temperature is 460°C for powder samples and it ranges between 400 and 500°C, for thin films, as a function of the number of coating layers. Dense, smooth and crack free thin films with grain sizes ranging from 20 nm to 500 nm are obtained, depending on the number of coating layers and on the post-deposition temperature annealing.

引用

页码：759 / 763

页数：4