Raman and AFM piezoresponse study of dense BaTiO3 nanocrystalline ceramics

被引：86

作者：

Buscaglia, V

Buscaglia, MT

Viviani, M

Ostapchuk, T

Gregora, I

Petzelt, J

Mitoseriu, L

Nanni, P

Testino, A

Calderone, R

Harnagea, C

Zhao, Z

Nygren, M

机构：

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

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

[3] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic

[4] Alexandru Ioan Cuza Univ, Dept Elect, Iasi 700506, Romania

[5] Univ Quebec, INRS, EMT, Varennes, PQ J3X 1S2, Canada

[6] Univ Stockholm, Arrhenius Lab, S-10691 Stockholm, Sweden

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2005年 / 25卷 / 12期

关键词：

spark plasma sintering; grain size; ferroelectric properties; BaTiO3;

D O I：

10.1016/j.jeurceramsoc.2005.03.190

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dense nanocrystalline BaTiO3 (BT) ceramics with grain sizes (GSs) below 100 nm obtained by spark plasma sintering (SPS), were investigated by micro-Raman spectroscopy in order to obtain information about the changes in the local order induced by size effects. The obtained spectra in the range 80-700 K showed the presence of all the crystalline phases of BaTiO3, even in the finest structure (50 nm grain size ceramic), with particularities attributed to the high density of non-ferroelectric grain boundaries. The AFM piezoresponse study incontestably proved the ferroelectric switching at local scale in nanocrystalline BaTiO3 ceramics at room temperature. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：3059 / 3062

页数：4

共 19 条

[1] Phenomenological theory of size effects on the cubic-tetragonal phase transition in BaTiO3 nanocrystals [J].