Low-temperature Synthesis of (K0.5Na0.5)NbO3 Nanopowders by an Urea Sol-Gel Combustion Method

被引：5
作者：
Nguyen Duc Van [1 ]
Dao Ngoc Nhiem [1 ]
机构：
[1] VAST, Inst Mat Sci, Hanoi 10000, Vietnam
来源：
CHEMISTRY LETTERS | 2014年 / 43卷 / 09期
关键词：
NA0.5K0.5NBO3; POWDERS; CERAMICS;
D O I：
10.1246/cl.140428
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Lead-free piezoelectric (K0.5Na0.5)NbO3 nanopowders were synthesized by urea sol gel combustion method using freshly prepared Nb2O5 center dot nH(2)O and alkali hydroxides as starting materials and urea as a fuel. The effects of metal cation/urea molar ratio and calcination temperature on the crystalline phase formation of (K0.5Na0.5)NbO3 were systematically investigated. The results showed that at a metal cation/urea molar ratio of 1:1, the single crystalline (K0.5Na0.5)NbO3 nanopowders, with an average grain size of 15 nm, were synthesized at calcination temperatures as low as 400 degrees C.
引用
收藏
页码：1438 / 1440
页数：3
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