SrBi2Nb2O9 ferroelectric powders and thin films prepared by sol-gel

被引：20

作者：

Yi, JH ^{[1
]}

Thomas, P ^{[1
]}

Manier, M ^{[1
]}

Mercurio, JP ^{[1
]}

Jauberteau, I ^{[1
]}

Guinebretière, R ^{[1
]}

机构：

[1] CNRS, Lab Mat Ceram & Traitements Surface, ESA 6015, Fac Sci, F-87060 Limoges, France

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 1998年 / 13卷 / 1-3期

关键词：

bismuth oxide layer; ferroelectric; spin-coating; thin films morphology;

D O I：

10.1023/A:1008667105783

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：

Pure SrBi2Nb2O9 powders and thin films were obtained using sol-gel synthesis from mixtures of niobium ethoxide, bismuth and strontium 2-ethylhexanoates. Powders crystallized for 2 hours at 700 degrees C had grain sizes of about 100-150 nm. SrBi2Nb2O9 thin films were prepared by spin-coating a stable precursor solution onto Si/SiO2/TiO2/Pt substrates. Crystallization of pure SrBi2Nb2O9 phase occurred at about 500-550 degrees C. Randomly oriented 0.3 mu m-thick crack-free films were obtained after 10 successive depositions and heating at 700 degrees C for 2 hours. P-E hysteresis loops have confirmed the ferroelectric behavior of the films: they show a remanent polarization of 2.5 mu C/cm(2) (5 V, 8 ms). No fatigue was observed up to 10(9) full switchings.

引用

页码：885 / 888

页数：4

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