Fabrication and properties of Na0.9K0.1NbO3 nanostructures by molten salt synthesis

被引：17
|
作者：
Ge, Haiyan [1 ]
Hou, Yudong [1 ]
Yang, Jianfeng [1 ]
Zhu, Mankang [1 ]
Wang, Hao [1 ]
Yan, Hui [1 ]
机构：
[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
来源：
POWDER TECHNOLOGY | 2013年 / 246卷
基金：
中国国家自然科学基金;
关键词：
Molten salt synthesis; Na0.9K0.1NbO3; Nanoparticles; Diffusion rate; Dielectric; Ferroelectric; LEAD-FREE; CERAMICS; TEMPERATURE; NIOBATE; POWDER;
D O I：
10.1016/j.powtec.2013.05.013
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Na0.9K0.1NbO3 nanostructures have been prepared by a molten salt synthesis method using KCl-NaCl as medium. Though the equal amount of Na2CO3 and K2CO3 has been introduced, the resulted products are a Na rich Na0.9K0.1NbO3, not Na0.5K0.5NbO3. Due to the higher diffusion rate of Na+ ions compared to that of K+ ions, the Na+ ions preferentially occupy the A-site in the perovskite structure, facilitating the formation of Na0.9K0.1NbO3. Moreover, Na0.9K0.1NbO3 ceramics densified from nanostructures show the saturated ferroelectric loop. The coercive electric field E-c and remanent polarization P-r are 45 kV/cm and 17 mu C/cm(2), respectively. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：144 / 147
页数：4
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