CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Raman Scattering Modification Induced by Structural Change in Alumina Polymorphs |
ZHANG Jian1, LI Hai-Tao1,2, GUO Jun-Hong3, HU Fang-Ren3** |
1School of Physics, Beijing Institute of Technology, Beijing 100081 2Department of Physics, Chengde Teacher's College for Nationalities, Chengde 067000 3School of Optoelectronic Engineering and Grüenberg Research Centre, Nanjing University of Posts and Telecommunications, Nanjing 210023
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Cite this article: |
ZHANG Jian, LI Hai-Tao, GUO Jun-Hong et al 2015 Chin. Phys. Lett. 32 126801 |
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Abstract The calculated Raman spectra disclose that alumina polymorphs of nordstrandite, gibbsite, diaspore, boehmite, bayerite and α-Al2O3 display different phonon behaviors, which can be attributed to their internal crystal structure changes. The strongest Raman peaks of nordstrandite, gibbsite, diaspore, boehmite, bayerite and α-Al2O3 are located at 214.2 cm?1, 3314.4 cm?1, 2298.6 cm?1, 747.7 cm?1, 3484.6 cm?1 and 529.2 cm?1, respectively. The characterizations in Raman spectra of those polymorphs are obviously different, which can be used in fingerprints to identify the alumina polymorphs structure.
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Received: 09 September 2015
Published: 05 January 2016
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PACS: |
68.35.Ja
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(Surface and interface dynamics and vibrations)
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78.30.-j
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(Infrared and Raman spectra)
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63.20.dk
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(First-principles theory)
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