Raman Scattering Modification Induced by Structural Change in Alumina Polymorphs
ZHANG Jian1 , LI Hai-Tao1,2 , GUO Jun-Hong3 , HU Fang-Ren3**
1 School of Physics, Beijing Institute of Technology, Beijing 1000812 Department of Physics, Chengde Teacher's College for Nationalities, Chengde 0670003 School of Optoelectronic Engineering and Grüenberg Research Centre, Nanjing University of Posts and Telecommunications, Nanjing 210023
Abstract ：The calculated Raman spectra disclose that alumina polymorphs of nordstrandite, gibbsite, diaspore, boehmite, bayerite and α -Al2 O3 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 -Al2 O3 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.
收稿日期: 2015-09-09
出版日期: 2016-01-05
:
68.35.Ja
(Surface and interface dynamics and vibrations)
78.30.-j
(Infrared and Raman spectra)
63.20.dk
(First-principles theory)
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2015, Vol. 32 
