Effect of mechanical activation on the structure and ferroelectric property of Na0.5K0.5NbO3

被引：41

作者：

Liu, Laijun ^{[1
,2
,3
]}

Wu, Meixia ^{[1
]}

Huang, Yanmin ^{[1
]}

Fang, Liang ^{[1
]}

Fan, Huiqing ^{[2
]}

Dammak, Hichem ^{[3
]}

Thi, Mai Pham ^{[4
]}

机构：

[1] Guilin Univ Technol, Key Lab Nonferrous Mat & New Proc Technol, Minist Educ, Guilin 541004, Peoples R China

[2] NW Polytech Univ, State Key Lab Solidificat Proc, Sch Mat Sci & Engn, Xian 710072, Peoples R China

[3] Ecole Cent Paris, Lab Struct Proprietes & Modelisat Solides, CNRS, UMR8580, F-92295 Chatenay Malabry, France

[4] THALES Res & Technol France, F-91767 Palaiseau, France

来源：

MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 09期

关键词：

Ceramics; Crystal structure; Defects; Ferroelectricity; OXYGEN PARTIAL-PRESSURE; GRAIN-GROWTH BEHAVIOR; MOLTEN-SALT METHOD; SOLID-SOLUTIONS; CERAMICS; SYSTEM; NIOBATE; MIXTURES; BATIO3; SRTIO3;

D O I：

10.1016/j.materresbull.2011.05.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mechanical activation synthesis of Na0.5K0.5NbO3 (NKN) was studied in order to explore the effect of mechanochemical interaction on the crystal structure and microstructure of NKN powder and ceramic. A single phase, nanocrystalline perovskite NKN powder has been derived from a mixture of oxide/carbonates via a mechanical activation route with heating at an elevated temperature. With the increase in milling time, the distortion of orthorhombic structure for NKN was weakened and the cell volume of NKN powder slightly decreased. The relative density and remnant polarization of NKN ceramics were improved, and the grain became uniform and smaller for prolonged milling NKN. The developed method is well suited for the production of NKN nanocrystallite powders and refined grain NKN ceramics. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1467 / 1472

页数：6

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