Sol-gel derived nanocrystalline and mesoporous barium strontium titanate prepared at room temperature

被引：36
作者：
Mohammadi, Mohammad Reza [1 ]
Fray, Derek J. [2 ]
机构：
[1] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran
[2] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
来源：
PARTICUOLOGY | 2011年 / 9卷 / 03期
关键词：
Barium strontium titanate; Room temperature; Sol-gel chemistry; Nanostructure; THIN-FILMS; DIELECTRIC-PROPERTIES; POWDERS; ROUTE; MECHANISM;
D O I：
10.1016/j.partic.2010.08.012
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Perovskite-type barium strontium titanate (BST) thin films and powders with nanocrystalline and mesoporous structure were prepared by a straightforward particulate sol-gel route at room temperature. The prepared sol had a narrow particle size distribution of about 20 nm. X-ray diffraction (XRD) revealed that phase composition and preferable orientation growth of BST depended upon the annealing temperature. Transmission electron microscope (TEM) images showed that the crystallite size of the powders decreased with increasing annealing temperature from 8 nm at 25 degrees C down to 5 nm at 800 degrees C. Field emission scanning electron microscope (FE-SEM) analysis and atomic force microscope (AFM) images revealed that BST thin films had mesoporous and nanocrystalline structure with average grain size of 30 nm at 600 degrees C. Based on Brunauer-Emmett-Teller (BET) analysis, the synthesized BST showed mesoporous structure containing pores with needle and plate shapes and BET surface area in the range of 49-32 m(2)/g at 500-800 degrees C. (C) 2011 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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页码：235 / 242
页数：8
相关论文
共 33 条
[1]  
[Anonymous], DST CUST TRAIN MAN Z
[2]   Sol-gel-derived pyroelectric barium strontium titanate thin films for infrared detector applications [J].
Cheng, JG ;
Tang, J ;
Zhang, AJ ;
Meng, XJ ;
Chu, JH .
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2000, 71 (06) :667-670
[3]   The fabrication and material properties of compositionally multilayered Ba1-xSrxTiO3 thin films for realization of temperature insensitive tunable phase shifter devices [J].
Cole, M. W. ;
Ngo, E. ;
Hirsch, S. ;
Demaree, J. D. ;
Zhong, S. ;
Alpay, S. P. .
JOURNAL OF APPLIED PHYSICS, 2007, 102 (03)
[4]  
Cullity B. D., 1978, ELEMENTS XRAY DIFFRA
[5]   STRUCTURAL AND MICROSTRUCTURAL EVOLUTION OF BARIUM-TITANATE THIN-FILMS DEPOSITED BY THE SOL-GEL PROCESS [J].
KAMALASANAN, MN ;
KUMAR, ND ;
CHANDRA, S .
JOURNAL OF APPLIED PHYSICS, 1994, 76 (08) :4603-4609
[6]   Simple chemical route for the quantitative precipitation of barium-strontium titanyl oxalate precursor leading to Ba1-xSrxTiO3 powders [J].
Khollam, YB ;
Bhoraskar, SV ;
Deshpande, SB ;
Potdar, HS ;
Pavaskar, NR ;
Sainkar, SR ;
Date, SK .
MATERIALS LETTERS, 2003, 57 (13-14) :1871-1879
[7]   HETEROEPITAXIAL GROWTH OF QUATERNARY BAXSR1-XTIO3 THIN-FILMS BY ARF EXCIMER-LASER ABLATION [J].
KOBAYASHI, H ;
KOBAYASHI, T .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1994, 33 (4A) :L533-L536
[8]   Low-temperature synthesis of single-phase barium strontium titanate thin film with a nm-seeding technique and its dielectric properties [J].
Kobayashi, Y ;
Iizuka, Y ;
Tanase, T ;
Konno, M .
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2005, 33 (03) :315-321
[9]   Studies on structural and electrical properties of barium strontium titanate thin films developed by metallo-organic decomposition [J].
Krupanidhi, SB ;
Peng, CJ .
THIN SOLID FILMS, 1997, 305 (1-2) :144-156
[10]   Dielectric properties of sol-gel derived barium strontium titanate thin films [J].
Lahiry, Sharmistha ;
Mansingh, A. .
THIN SOLID FILMS, 2008, 516 (08) :1656-1662
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