Supercritical fluid route for synthesizing crystalline barium strontium titanate nanoparticles

被引：24
|
作者：
Reverón, H [1 ]
Elissalde, C [1 ]
Aymonier, C [1 ]
Bidault, O [1 ]
Maglione, M [1 ]
Cansell, F [1 ]
机构：
[1] CNRS, ICMCB, F-33608 Pessac, France
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2005年 / 5卷 / 10期
关键词：
BST nanostructured powder; supercritical fluids; solvothermal synthesis; ferroelectric materials;
D O I：
10.1166/jnn.2005.409
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Pure and well-crystallized Barium Strontium Titanate (BST) nanoparticles with controlled Ba/Sr ratio have been successfully synthesized under supercritical conditions using a continuous-flow reactor in the temperature range of 150-380 degrees C at 26 MPa. To synthesize the Ba0.6Sr0.4TiO3 composition alkoxides, ethanol and water were used. The resulting nanopowder consists of fine particles with an average particle size of 23 nm. The results show that the Ba/Sr ratio of this powder can be accurately controlled from the composition of precursor. The characterization of the as-synthesized Ba0.6Sr0.4TiO3 solid-solution and the dielectric properties of the sintered ceramics are here reported.
引用
收藏
页码：1741 / 1744
页数：4
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