Size dependence of phonon Raman spectra in Mn2O3 nanocrystals

被引：23
|
作者：
Chen, ZW [1 ]
Tan, S
Zhang, SY
Wang, J
Jin, SH
Zhang, YH
Sekine, H
机构：
[1] Univ Sci & Technol China, Struct Res Lab, Hefei 230026, Peoples R China
[2] Teikyo Univ, Sch Sci & Engn, Dept Elect & Elect Syst Engn, Utsunomiya, Tochigi 320, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2000年 / 39卷 / 11期
关键词：
Raman spectroscopy; phonon; Mn2O3; nanocrystals;
D O I：
10.1143/JJAP.39.6293
中图分类号：
O59 [应用物理学];
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
收藏
页码：6293 / 6295
页数：3
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