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Raman spectrometry study of phase stability and phonon anharmonicity of Al3BC3 at elevated temperatures and high pressures
Xiang, Huimin1,2; Li, Fangzhi1; Li, Jingjing1,2; Wang, Jiemin1; Wang, Xiaohui1; Wang, Jingyang1; Zhou, Yanchun1,3
Corresponding AuthorWang, Jingyang(jywang@imr.ac.cn)
2011-12-01
Source PublicationJOURNAL OF APPLIED PHYSICS
ISSN0021-8979
Volume110Issue:11Pages:7
AbstractIn situ Raman spectra of Al3BC3 have been measured at elevated temperatures of up to 1000 degrees C and high pressures of up to 32 GPa. It is shown that there are no abnormal phonon shifts when the measurement conditions were up to 1000 degrees C or up to 27 GPa, which indicates a good structural stability of Al3BC3 at high temperatures and pressures. The Raman active phonon modes were assigned comprehensively to the corresponding vibration modes by first-principles calculations. Interestingly, an abnormal softening of the E-1g(559 cm(-1)) and E-2g(578 cm(-1)) phonon modes were observed when the pressure was higher than 27 GPa. Correlating the results with previous theoretical predictions of polymorphism in Al3BC3, the mode softening at higher pressures might originate from the structural transformation (from hexagonal to tetragonal symmetry) involving changes of Al and C coordination numbers. In addition, the phonon anharmonicity has been investigated by studying the temperature and pressure dependence of the Raman peak shifts and broadenings. Finally, the present work has highlighted that in situ Raman spectrometry study is a sensitive method for investigating the structural stability and phonon anharmonicity of complex ceramics. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3665197]
Funding OrganizationNatural Sciences Foundation of China
DOI10.1063/1.3665197
Indexed BySCI
Language英语
Funding ProjectNatural Sciences Foundation of China[50672102] ; Natural Sciences Foundation of China[50832008] ; Natural Sciences Foundation of China[51032006]
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000298254800025
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/106944
Collection中国科学院金属研究所
Corresponding AuthorWang, Jingyang
Affiliation1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Aerosp Res Inst Mat & Proc Technol, Beijing 100076, Peoples R China
Recommended Citation
GB/T 7714
Xiang, Huimin,Li, Fangzhi,Li, Jingjing,et al. Raman spectrometry study of phase stability and phonon anharmonicity of Al3BC3 at elevated temperatures and high pressures[J]. JOURNAL OF APPLIED PHYSICS,2011,110(11):7.
APA Xiang, Huimin.,Li, Fangzhi.,Li, Jingjing.,Wang, Jiemin.,Wang, Xiaohui.,...&Zhou, Yanchun.(2011).Raman spectrometry study of phase stability and phonon anharmonicity of Al3BC3 at elevated temperatures and high pressures.JOURNAL OF APPLIED PHYSICS,110(11),7.
MLA Xiang, Huimin,et al."Raman spectrometry study of phase stability and phonon anharmonicity of Al3BC3 at elevated temperatures and high pressures".JOURNAL OF APPLIED PHYSICS 110.11(2011):7.
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