| 传压介质对晶格振动和相变压力的影响——α-Bi2O3的高压拉曼光谱研究 |
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| 引用本文： | 刘振先,崔启良,赵永年,邹广田.传压介质对晶格振动和相变压力的影响——α-Bi2O3的高压拉曼光谱研究[J].高压物理学报,1990,4(2). |
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| 作者姓名： | 刘振先 崔启良 赵永年 邹广田 |
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| 作者单位： | 吉林大学原子与分子物理研究所
(刘振先，崔启良，赵永年)，吉林大学原子与分子物理研究所(邹广田) |
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| 摘 要： | 本文分别使用4∶1的甲醇-乙醇混合溶液和固态氩做传压介质测量α-Bi2O3的高压拉曼光谱。实验结果表明，传压介质对样品的谱线频移速率及相变压力有明显的影响。通过对拉曼光谱的分析认定，α-Bi2O3在高压下可能经历了一次结构相变，在准静水压和非静水压条件下的相变压力分别为23.1 GPa和20.4 GPa。
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| 关 键 词： | 传压介质 拉曼光谱 相变 |
| 收稿时间： | 1989-09-07; |
Influence of Pressure-Transmitting Media on the Lattice Vibration and Phase Transition Pressure-High Pressure Raman Spectra Studies of α-Bi2O3 |
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| Liu Zhenxian,Cui Qiliang,Zhao Yongniah,Zou Guangtian.Influence of Pressure-Transmitting Media on the Lattice Vibration and Phase Transition Pressure-High Pressure Raman Spectra Studies of α-Bi2O3[J].Chinese Journal of High Pressure Physics,1990,4(2). |
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| Authors: | Liu Zhenxian Cui Qiliang Zhao Yongniah Zou Guangtian |
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| Institution: | Institute of Atomic and Molecular Physics, Jilin University, Changchun 130023, China |
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| Abstract: | High pressure Raman spectra of α-Bi2O3 were measured by using a 4∶1 methanol-ehanol mixture and solid argon as pressure-transmitting media respectively. The experimental results show that the shift rates of Raman lines in the sample are distinctly affected by the pressure-transmitting media. We firmly believed that α-Bi2O3 probably undergoes a structural phase transition. The phase transition pressure are 23.1 GPa and 20.4 GPa under quasi-hydrostatic condition and nonhydrostatic condition respectively. |
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| Keywords: | pressure-transmitting medium Raman spectrum phase transition |
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