Raman study of NiFe2O4 nanoparticles, bulk and films: effect of laser power
Raman study of NiFe2O4 nanoparticles, bulk and films: effect of laser power
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DOI：
10.1002/jrs.2791
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发表时间：
2011-05-01
影响因子：
2.5
通讯作者：
Sathe, V. G.
中科院分区：
文献类型：
--
作者：
Ahlawat, Anju;Sathe, V. G.
用显微拉曼光谱研究了NiFe 2 O 4-化合物的纳米颗粒、块体和薄膜。在所有形式的样品中研究了入射激光功率变化至40 mW的效果。光谱显示出大幅度的红移和线宽作为高入射激光功率的结果。结果表明，反尖晶石结构保持稳健，没有观察到激光诱导氧化的痕迹。低温研究的散装和纳米颗粒也进行了阐明由于高入射激光功率的热效应。对于40 mW的最大入射激光功率，温度的升高估计类似于625 ℃。版权所有（C）2010约翰威利父子有限公司
Nanoparticles, bulk and thin films of NiFe2 O-4 compounds are studied by micro-Raman spectroscopy. The effect of varying the incident laser power up to 40 mW was studied in all forms of the samples. The spectra showed a large magnitude of red shift and line broadening as a result of high incident laser power. It is shown that the inverse spinel structure remains robust, and no trace of laser-induced oxidation was observed. The low-temperature study of the bulk and nanoparticles has also been carried out for elucidating thermal effects due to the high incident laser power. The rise in temperature for maximum incident laser power of 40 mW was estimated to be similar to 625 degrees C. Copyright (C) 2010 John Wiley & Sons, Ltd.