Raman Spectroscopy of V4O7 Films
Source abstract
Abstract
A thin film of vanadium oxide Magnéli phase V4O7 was produced using cathodic arc sputtering. X-ray diffraction, Rutherford backscattering spectrometry and Raman investigations confirmed the formation of this phase. The Raman spectrum of V4O7 differs considerably from the spectrum of another Magnéli oxide, V3O5, showing that Raman spectroscopy is an excellent tool for distinguishing between these two phases. Temperature-dependent Raman measurements revealed a significant change of the spectra near the V4O7 metal–insulator phase transition.
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Research context
OpenAlex topics: Transition Metal Oxide Nanomaterials · Catalysis and Oxidation Reactions · ZnO doping and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Research and Educational Center “Functional Nanomaterials”, Baltic Federal University, Aleksandra Nevskogo 14, 236041 Kaliningrad, Russia
Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607 Hamburg, Germany
Funding
Ministry of Science and Higher Education of the Russian Federation
References (23)
Show source-provided references
1. Studies on vanadium oxides10.3891/acta.chem.scand.08-1599 ↗
2. Crystallography of VnO2n−1 (3 ≤ n ≤ 8)10.1016/0025-5408(71)90120-6 ↗
3. Metal-insulator transition in VnO2n−110.1016/0022-4596(73)90189-8 ↗
4. Specific features of the electrical conductivity of V4O7 single crystals10.1134/S1063783409110067 ↗
5. Structural aspects of the metal-insulator transition in V4O710.1016/0022-4596(73)90233-8 ↗
6. A review of Raman spectroscopy of vanadium oxides10.1002/jrs.5616 ↗
7. Raman spectra and elastic light scattering dynamics of V3O5 across insulator–metal transition10.1063/5.0027888 ↗
8. In situ H2O2 generation for tuning reactivity of V4O7 nanoflakes and V2O5 nanorods for oxidase enzyme mimic activity and removal of organic pollutants10.1016/j.jece.2021.105044 ↗
9. Novel thermochromic (TC) and electrochromic (EC) characteristics of the V4O7 liquid crystal for LCDs and versatile optoelectronic applications10.1016/j.molliq.2021.115620 ↗
10. Xu, J., Hu, C., Han, H., He, M., Wan, B., and Xia, C. (2010, January 3–8). The synthesis and photoelectric response of single-crystalline V4O7 nanowires. Proceedings of the 2010 3rd International Nanoelectronics Conference, Hong Kong, China.
11. Additive-free synthesis of V4O7 hierarchical structures as high performance cathodes for lithium ion batteries10.1039/C4CC01050G ↗
12. Mixed-valence vanadium oxides studied by XPS10.1016/S0039-6028(00)00111-4 ↗
13. Temperature effects on structure and optical properties of radio-frequency sputtered VO210.1116/1.576276 ↗
14. SIMNRA, a simulation program for the analysis of NRA, RBS and ERDA10.1063/1.59188 ↗
15. Profex: A graphical user interface for the Rietveld refinement program BGMN10.1107/S1600576715014685 ↗
16. Appearance of large crystalline domains in VO2 films grown on sapphire (001) and their phase transition characteristics10.1063/1.4923223 ↗
17. Raman and XPS characterization of vanadium oxide thin films with temperature10.1016/j.apsusc.2017.01.160 ↗
18. Polarized Raman scattering in micrometer-sized crystals of triclinic vanadium dioxide10.1063/5.0032916 ↗
19. Structural aspects of the metal-insulator transition in V5O910.1016/S0022-4596(74)80035-6 ↗
20. The crystal structure of and valency distribution in the low-temperature modification of V3O5. The decisive importance of a few very weak reflexions in a crystal-structure determination
21. InterplanarA: A computer program for the calculation of the crystallographic interplanar angles
22. Sharpened VO2 phase transition via controlled release of epitaxial strain10.1021/acs.nanolett.7b02482 ↗
23. Thickness dependence of the phase transition temperature in Ag2Se thin films10.1063/1.346565 ↗