Preparation of nanocrystalline ferroelectric BaNb2O6 by citrate gel method

被引：8
|
作者：
Gaikwad, SP
Samuel, V
Pasricha, R
Ravi, V [1 ]
机构：
[1] Natl Chem Lab, Phys & Mat Chem Div, Pune 411008, Maharashtra, India
[2] Natl Chem Lab, Catalysis Div, Ctr Mat Characterizat, Pune 411008, Maharashtra, India
来源：
BULLETIN OF MATERIALS SCIENCE | 2005年 / 28卷 / 02期
关键词：
ceramics; electronic material; oxides; chemical synthesis; ferroelectricity;
D O I：
10.1007/BF02704230
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A gel was formed when a aqueous solution of BaCl2, NbF5 and citric acid in stoichiometric ratio is heated on a water bath. This gel on decomposition at 600 degrees C yielded the nano crystallites of BaNb2O6, as confirmed by X-ray diffraction study (XRD). This is a much lower temperature as compared to that prepared by traditional solid state method (1000 degrees C) as reported for the formation of BaNb2O6. Transmission electron microscopic. (TEM) investigations revealed that the average particle size is 50 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1000. The ferroelectric hysteresis loop parameters of these samples were also studied.
引用
收藏
页码：121 / 123
页数：3
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