拉曼光谱
钒
氧化钒
分析化学(期刊)
杂质
光谱学
亚稳态
拉曼散射
材料科学
结晶学
谱线
化学
无机化学
物理
光学
色谱法
量子力学
天文
有机化学
作者
Petr Shvets,Olga Dikaya,Ksenia Maksimova,Alexander Goikhman
摘要
Abstract This review summarizes Raman scattering data for different stable and metastable phases of vanadium oxides. We analyze literature data on crystal structures existing in the binary vanadium‐oxygen system. If available, we combine these data with experimental Raman spectra and relations of vibrational modes with the atomic arrangements and motions in crystals. Further, we employ arc sputtering to produce vanadium oxide films, including α and β‐vanadium, V 14 O 6 , VO, V 2 O 3 , V 3 O 5 , several phases of VO 2 , V 6 O 13 , V 3 O 7 , and V 2 O 5 , as confirmed by X‐ray diffraction analysis. All the films are studied using Raman spectroscopy: low‐ and high‐temperature V 3 O 5 and VO x (1.67 < x < 2) are investigated for the first time. We demonstrate that a significant change in the V 3 O 5 spectrum takes place along the phase transition occurring at approximately 140 °C. Moreover, we describe differences between the spectra of VO 2 polymorphs produced without doping impurities, VO 2 (M1), VO 2 (M2), and VO 2 (T). Finally, we analyze conflicting data on V 7 O 16 and V 3 O 7 and provide an explanation of the observed spectra. Overall, 21 spectra are identified for 53 known phases. Our work is aimed at laying the groundwork for easy identification of vanadium oxide phases in thin films, using Raman spectroscopy.
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