Aerosol Deposition of Ba0.8Sr0.2TiO3 Thin Films

被引：3
|
作者：
Brankovic, Z. [1 ]
Brankovic, G. [1 ]
Tucic, A. [1 ]
Radojkovic, A. [1 ]
Longo, E. [2 ]
Varela, J. A. [2 ]
机构：
[1] Inst Multidisciplinary Res, Belgrade 11030, Serbia
[2] UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
来源：
SCIENCE OF SINTERING | 2009年 / 41卷 / 03期
关键词：
Thin films; Aerosol deposition; Barium Strontium Titanate; Roughness; SPRAY-PYROLYSIS; MICROSTRUCTURE;
D O I：
10.2298/SOS0903303B
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：
In this work we optimized conditions for aerosol deposition of homogeneous, nano-grained, smooth Ba0.8Sr0.2TiO3 thin films. Investigation involved optimization of deposition parameters, namely deposition time and temperature for different substrates. Solutions were prepared from titanium isopropoxide, strontium acetate and barium acetate. Films were deposited on Si (1 0 0) or Si covered by platinum (Pt (1 1 1) /Ti/SiO2/Si). Investigation showed that the best films were obtained at substrate temperature of 85 degrees C. After deposition films were slowly heated up to 650 degrees C, annealed for 30 min, and slowly cooled. Grain size of BST films deposited on Si substrate were in the range 40-70 nm, depending on deposition conditions, while the same films deposited on Pt substrates showed mean grain size in the range 35-50 nm. Films deposited under optimal conditions were very homogeneous, crack-free, and smooth with rms roughness lower than 4 nm for both substrates.
引用
收藏
页码：303 / 308
页数：6
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