γ-Mn₂O₃粉末的X射线衍射光谱与拉曼光谱研究
Study on X-Ray Diffraction and Raman Spectra of γ-Mn₂O₃ Powder

γ-Mn₂O₃是Mn₂O₃的两种晶型之一(另一种为α-Mn₂O₃)，在自然界中并不天然存在，是在实验室中人为合成的一种两性氧化物，可以看作具有阳离子空位的缺欠型尖晶石结构。光谱分析技术是现代的重要分析技术之一，本文将γ-Mn₂O₃粉末进行X光谱衍射检测与拉曼光谱检测，检测数据处理后使用Jade与Origin软件画出光谱图像，找出γ-Mn₂O₃的特征峰，并结合文献，验证γ-Mn₂O₃的四方晶体结构，得到晶格参数，并分析出拉曼光谱特征峰是由原子键的变形振动、晶格振动及分子结构中的空位振动而来，最后验证了γ-Mn₂O₃的分子结构与部分化学性质。
γ-Mn₂O₃ is one of the two crystal types of Mn₂O₃ (the other is α-Mn₂O₃), which does not exist naturally in nature. It is a kind of amphoteric oxide synthesized artificially in the laboratory. It can be regarded as a cationic vacancy deficient spinel structure. Spectral analysis technology is one of the important modern analysis technology, the γ-Mn₂O₃ powder will be detected by X-ray diffraction and Raman spectroscopy in this paper, detection data processing using Jade and Origin software to draw the spectral image, find out the characteristic peak of γ-Mn₂O₃, verify γ-Mn₂O₃ tetragonal crystal structure combined with literature, and get lattice parameters. It is analyzed that the characteristic peak of the Raman spectrum is derived from the deformation vibration of atomic bond, lattice vibration and vacancy vibration in molecular structure; finally, the molecular structure and some chemical properties of γ-Mn₂O₃ are verified.