Nano-powders of Na0.5K0.5NbO3 made by a sol-gel method

被引：44

作者：

Chowdhury, Anirban ^{[1
]}

Bould, Jonathan ^{[1
]}

Zhang, Yifan ^{[1
]}

James, Craig ^{[1
]}

Milne, Steven J. ^{[1
]}

机构：

[1] Univ Leeds, Inst Mat Res, Leeds LS2 9JT, W Yorkshire, England

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2010年 / 12卷 / 01期

关键词：

Nano-powders; Sol-gel; Sodium potassium niobate; X-ray diffraction; Fourier transform infrared spectroscopy; Transmission electron microscopy; Synthesis method; DIELECTRIC-PROPERTIES; CERAMICS;

D O I：

10.1007/s11051-009-9595-0

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Sodium potassium niobate (NKN) nanoparticle powders were synthesised through the thermal decomposition of a sol-gel NKN precursor. Powders and gels were characterised by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and transmission electron microscopy (TEM). Hydrated carbonate phases formed as a result of reaction with evolved vapours during organic decomposition, and by reaction of NKN powders with H2O and CO2 on exposure to air. The primary particle size of the powders increased from <50 to <250 nm as decomposition temperatures were raised from 500 to 950 degrees C.

引用

页码：209 / 215

页数：7

共 18 条

[1]

[Anonymous], 1980, Infrared Characteristic Group Frequencies

[2] Effect of calcination conditions and excess alkali carbonate on the phase formation and particle morphology of Na0.5K0.5NbO3 powders [J].