Continuous supercritical synthesis and dielectric behaviour of the whole BST solid solution

被引：28

作者：

Reveron, H. ^{[1
]}

Elissalde, C. ^{[1
]}

Aymonier, C. ^{[1
]}

Bousquet, C. ^{[1
]}

Maglione, M. ^{[1
]}

Cansell, F. ^{[1
]}

机构：

[1] Univ Bordeaux 1, CNRS, UPR 9048, ICMCB, F-33608 Pessac, France

来源：

NANOTECHNOLOGY | 2006年 / 17卷 / 14期

关键词：

BARIUM-STRONTIUM-TITANATE; HYDROTHERMAL SYNTHESIS; FERROELECTRIC TRANSITION; TEMPERATURE; NANOPOWDERS; PARTICLES; POWDERS;

D O I：

10.1088/0957-4484/17/14/028

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study we show that pure and well crystallized nanoparticles of BaxSr1-xTiO3 (BST) can be synthesized over the entire range of composition through the hydrolysis and further crystallization of alkoxide precursors under supercritical conditions. To our knowledge, this is the first time that the whole ferroelectric solid solution has been produced in a continuous way, using the same experimental conditions. The composition of the powder can be easily controlled by adjusting the feed solution composition. The powders consist of soft-aggregated monocrystalline nanoparticles with an average particle size ranging from similar to 20 to 40 nm. Ferroelectric ceramics with accurately adjustable Curie temperature (100 - 390 K) can thus be obtained by sintering.

引用

页码：3527 / 3532

页数：6

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