Temperature-induced phase transition of Ca2AlSiO5.5: Raman spectroscopic study | |
Shuangmeng Zhai; Kuan Zhai; Hu Wang; Xiang Wu; Weihong Xue | |
刊名 | Vibrational Spectroscopy |
2019 | |
卷号 | 103页码:1-6 |
关键词 | Ca2alsio5.5 phase Transition raman Spectra high Temperature |
英文摘要 | The Raman spectra of low-pressure and high-pressure Ca2AlSiO5.5 oxygen-deficient perovskites have been investigated in the temperature range of 153–1273 K at ambient pressure. No phase transition was observed for low-pressure Ca2AlSiO5.5 in this study, but an irreversible phase transition was observed for high-pressure Ca2AlSiO5.5 at 1223 K. The recovered sample of high-pressure Ca2AlSiO5.5 from 1273 K was confirmed as a single homogeneous phase (high-temperature Ca2AlSiO5.5). The Raman spectra of high-temperature Ca2AlSiO5.5 phase have also been studied in the temperature range of 153–1273 K at ambient pressure. All the observed Raman active bands of the three samples showed linear temperature dependence with different slopes. The quantitative temperature dependences of Raman bands are -2.90 × 10−2 ˜ -0.31 × 10−2 , -3.56 × 10−2 ˜ -0.50 × 10−2 , and -3.20 × 10−2 ˜ 0.28 × 10−2 cm-1 K-1 for low-pressure, high-pressure and high-temperature Ca2AlSiO5.5, respectively. The isobaric mode Grüneisen parameters of low-pressure Ca2AlSiO5.5 were calculated by using present high-temperature Raman spectra combined with a previous result of the thermal expansion coefficient, varying from 0.08 to 1.10 with an average of 0.35. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/10590] |
专题 | 地球化学研究所_地球内部物质高温高压实验室 |
作者单位 | 1.State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.Key Laboratory of High-temperature and High-pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, Guizhou, China |
推荐引用方式 GB/T 7714 | Shuangmeng Zhai;Kuan Zhai;Hu Wang;Xiang Wu;Weihong Xue. Temperature-induced phase transition of Ca2AlSiO5.5: Raman spectroscopic study[J]. Vibrational Spectroscopy,2019,103:1-6. |
APA | Shuangmeng Zhai;Kuan Zhai;Hu Wang;Xiang Wu;Weihong Xue.(2019).Temperature-induced phase transition of Ca2AlSiO5.5: Raman spectroscopic study.Vibrational Spectroscopy,103,1-6. |
MLA | Shuangmeng Zhai;Kuan Zhai;Hu Wang;Xiang Wu;Weihong Xue."Temperature-induced phase transition of Ca2AlSiO5.5: Raman spectroscopic study".Vibrational Spectroscopy 103(2019):1-6. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论