Nanostructured barium titanate ceramics

被引：46

作者：

Buscaglia, V

Viviani, M

Buscaglia, MT

Nanni, P

Mitoseriu, L

Testino, A

Stytsenko, E

Daglish, M

Zhao, Z

Nygren, M

机构：

[1] CNR, Inst Energet & Interphases, I-16149 Genoa, Italy

[2] Univ Genoa, Dept Chem & Proc Engn, I-16129 Genoa, Italy

[3] Ind Res Ltd, Lower Hutt, New Zealand

[4] Univ Stockholm, Arrhenius Lab, Dept Inorgan Chem, S-10691 Stockholm, Sweden

来源：

POWDER TECHNOLOGY | 2004年 / 148卷 / 01期

关键词：

nanoparticles; nanocrystalline materials; barium titanate; airflow deposition; spark plasma sintering;

D O I：

10.1016/j.powtec.2004.09.016

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Dense nanocrystalline ceramics can be obtained starting from non-agglomerated nanopowders and using low-temperature sintering processes. The preparation and the properties of Barium Titanate (BaTiO3) ceramics and thick films are reported: ceramics were prepared by Spark Plasma Sintering (SPS) at 800 degreesC of nanopowders produced by a wet chemical process, while films were fabricated by airflow deposition (AD) of mixed fine and coarse powders at room temperature followed by isothermal firing. Ferroelectric ordering was found in both the ceramics and the sintered films by a.c. impedance. The transition from ferroelectric to paraelectric state was broadened over a wide temperature range with Curie-Weiss parameters strongly depressed in comparison to coarse-grained ceramics. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：24 / 27

页数：4

共 14 条

[1] Synthesis of barium titanate powders by low-temperature aqueous synthesis using a new segmented flow tubular reactor [J].