摘要
研究了不同粒径的αFe2O3纳米粉体在红外光谱中的FeO特征振动带,结果表明当粒径为50nm时出现A2u振动,减少到10nm时,Eu振动带劈裂为双峰。根据在不同温度下烧结的αFe2O3粉体中残存硝酸根的红外光谱峰强度变化。
The pattern of Fe O vibration in the IR spectra of α Fe 2O 3 nanopowder with different crystal sizes was studied. The A 2u vibration mode can be observed as the size decreasing to 50nm. The E u band is split into two peaks when the size is decreased to 10nm. The intensity of the residual nitrate in the IR spectra of the nanopowder calcinated at different temperatures was also investigated. The result implies that the residual nitrate could enhance the gas sensitivity of the thick film sensor.
出处
《光散射学报》
1999年第2期170-172,共3页
The Journal of Light Scattering