Core-shell structure and size effect in barium titanate nanoparticle

被引：51

作者：

Fang, Chao ^{[1
,2
]}

Zhou, DongXiang ^{[2
]}

Gong, ShuPing ^{[2
]}

机构：

[1] Wuhan Polytech Univ, Dept Math & Phys, Wuhan 430023, Peoples R China

[2] Huazhong Univ Sci & Technol, Dept Elect Sci & Technol, Wuhan 430074, Hubei Province, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2011年 / 406卷 / 6-7期

关键词：

Nanoparticle; Core-shell; Ferroelectric; Dielectric; DIELECTRIC-PROPERTIES; FERROELECTRIC CERAMICS; BATIO3; PARTICLES; THIN-FILMS; DEPENDENCE; POWDER;

D O I：

10.1016/j.physb.2011.01.024

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A quantitative core-shell structure model on the grain size effect of nano-BaTiO3 ceramics has been proposed on the basis of the Ginsburg-Landau-Devonshire thermodynamic theory. In this study, we have considered the existence of surface effects, which leads to the core-shell structure in BaTiO3 nanoparticles consisting of inner tetragonal core, gradient lattice strain layer, and surface cubic layer. The size effects on the spontaneous polarization, Curie temperature, c/a ratio, and electrocaloric and dielectric properties of BaTiO3 ferroelectric nanoparticle are successfully explained. Theoretical and experimental results for BaTiO3 nanoparticle are compared and discussed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1317 / 1322

页数：6

共 40 条

[1] Influence of mechanical boundary conditions on the electrocaloric properties of ferroelectric thin films [J].

Akcay, G. ;

Alpay, S. P. ;

Rossetti, G. A., Jr. ;

Scott, J. F. .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (02)

[2] Magnitude of the intrinsic electrocaloric effect in ferroelectric perovskite thin films at high electric fields [J].

Akcay, G. ;

Alpay, S. P. ;

Mantese, J. V. ;

Rossetti, G. A., Jr. .

APPLIED PHYSICS LETTERS, 2007, 90 (25)

[3] DIELECTRIC-PROPERTIES OF FINE-GRAINED BARIUM-TITANATE CERAMICS [J].

ARLT, G ;

HENNINGS, D ;

DEWITH, G .

JOURNAL OF APPLIED PHYSICS, 1985, 58 (04) :1619-1625

[4] Direct measurement of giant electrocaloric effect in BaTiO3 multilayer thick film structure beyond theoretical prediction [J].

Bai, Yang ;

Zheng, Guangping ;

Shi, Sanqiang .

APPLIED PHYSICS LETTERS, 2010, 96 (19)

[5] PHENOMENOLOGICAL THEORY OF HIGH PERMITTIVITY IN FINE-GRAINED BARIUM TITANATE [J].

BUESSEM, WR ;

CROSS, LE ;

GOSWAMI, AK .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1966, 49 (01) :33-&

[6] High dielectric constant and frozen macroscopic polarization in dense nanocrystalline BaTiO3 ceramics [J].

Buscaglia, MT ;

Viviani, M ;

Buscaglia, V ;

Mitoseriu, L ;

Testino, A ;

Nanni, P ;

Zhao, Z ;

Nygren, M ;

Harnagea, C ;

Piazza, D ;

Galassi, C .

PHYSICAL REVIEW B, 2006, 73 (06)

[7] Raman and AFM piezoresponse study of dense BaTiO3 nanocrystalline ceramics [J].

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 .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2005, 25 (12) :3059-3062

[8] EFFECT OF SINTERING AIDS ON MICROSTRUCTURES AND PTCR CHARACTERISTICS OF (SR0.2BA0.8)TIO3 CERAMICS [J].

CHENG, HF ;

LIN, TF ;

HU, CT ;

LIN, IN .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1993, 76 (04) :827-832

[9] Influence of thermal strains on the electrocaloric and dielectric properties of ferroelectric nanoshells [J].

Dai, Xiao ;

Cao, Hai-Xia ;

Jiang, Qing ;

Lo, Veng Cheong .

JOURNAL OF APPLIED PHYSICS, 2009, 106 (03)

[10] Ferroelectric properties of nanocrystalline barium titanate ceramics [J].

Deng, Xiangyun ;

Wang, Xiaohui ;

Wen, Hai ;

Chen, Liangliang ;

Chen, Lei ;

Li, Longtu .

APPLIED PHYSICS LETTERS, 2006, 88 (25)

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