Size dependence of phonon Raman spectra in Mn2O3 nanocrystals

被引：0

作者：

Chen, Zhiwen ^{[1
]}

Tan, Shun ^{[1
]}

Zhang, Shuyuan ^{[1
]}

Wang, Jian ^{[1
]}

Jin, Sizhao ^{[1
]}

Zhang, Yuheng ^{[1
]}

Sekine, Hisashi ^{[2
]}

机构：

[1] Structure Research Laboratory, Univ. of Sci. and Technol. of China, Hefei 230026, China

[2] Dept. Elec. Electronics Syst. Eng., School of Science and Engineering, Teikyo University, 1-1 Toyosatodai, Utsunomiya, Tochigi 320, Japan

来源：

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers | 2000年 / 39卷 / 11期

关键词：

Grain size and shape - Nanostructured materials - Optical correlation - Particle size analysis - Phonons - Precipitation (chemical) - Raman spectroscopy - Transmission electron microscopy - X ray powder diffraction;

D O I：

10.1143/jjap.39.6293

中图分类号：

学科分类号：

摘要：

Nanometer manganic oxide (Mn2O3) has been prepared by the chemical liquid homogeneous precipitation (CLHP) method. The size dependence of phonon Raman spectra in Mn2O3 nanocrystals has been investigated. Transmission electron micrographs and X-ray powder diffraction patterns show that the average particle sizes are in the range of 9 to 50 nm. From the Raman spectra patterns of the nanometer Mn2O3 particle, we determined the broadening of the Raman peak in the lower frequency region. This phenomenon was explained by a spatial correlation model. We also found that the intensities of the main Raman peak decrease with the decrease in the grain size of Mn2O3 nanocrystals.

引用

页码：6293 / 6295

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