MP  >> Vol. 7 No. 3 (May 2017)

    水热法合成Pb2Te3O8及其物性研究
    Physical Properties Studies of Pb2Te3O8 Synthesized by Hydrothermal Method

  • 全文下载: PDF(1647KB) HTML   XML   PP.44-51   DOI: 10.12677/MP.2017.73007  
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作者:  

马 艳:西南交通大学物理科学技术学院,材料先进技术教育部重点实验室,四川 成都;
王文丹:西南交通大学,高压科学与技术重点实验室,四川 成都;
张林基:西南交通大学物理科学技术学院,材料先进技术教育部重点实验室,四川 成都;西南交通大学,高压科学与技术重点实验室,四川 成都

关键词:
Pb2Te3O8水热法红外吸收光谱高压拉曼光谱Pb2Te3O8 Hydrothermal Synthesis Infrared Absorption Spectrum High Pressure Raman Spectra

摘要:

利用水热合成法制备了Pb2Te3O8单晶样品,通过晶体结构精修软件GSAS对X射线衍射图谱的精修确定了样品相及其结构参数。随后对Pb2Te3O8进行了红外吸收光谱以及高压拉曼光谱测试。红外光谱实验中确定了Pb2Te3O8对应的红外吸收峰位置,高压拉曼研究是利用金刚石压砧在室温下进行,在0.3~21.8 GPa压强范围内测定了拉曼光谱,通过分析拉曼峰的频移和劈裂变化情况,发现随着压力的增加所有振动模的频率是单调线性变化的并且没有新峰出现,拉曼谱图的这种变化表明在Pb2Te3O8在压力高达21.8 GPa高压拉曼实验中并没有压力引起的相变发生。

Pb2Te3O8 samples were prepared by hydrothermal synthesis. The phase and structural parameters of the synthesized Pb2Te3O8 sample were determined by Rietveld refinement of the observed powder XRD data. The infrared absorption spectra, ambient pressure and high pressure Raman spectra of Pb2Te3O8 were measured. The infrared absorption peak of Pb2Te3O8 was determined by infrared spectroscopy. The high-pressure Raman study was carried out at room temperature by using a diamond anvil, and the Raman spectra were measured in the range of 0.3 - 21.8 GPa. By analyzing the frequency shift and splitting of the Raman peak, it is found that the frequency of all the vibrational modes varies monotonically and without the presence of new peaks as the pressure increase, this change in the Raman spectrum indicates that the structure of Pb2Te3O8 can be stabilized to 21.8 GPa without phase transition.

文章引用:
马艳, 王文丹, 张林基. 水热法合成Pb2Te3O8及其物性研究[J]. 现代物理, 2017, 7(3): 44-51. https://doi.org/10.12677/MP.2017.73007

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