Investigation of phase evolution and control over phase transformation temperature and thermal hysteresis using stoichiometry and co-doping in VO2 thin films
Source abstract
Abstract
Structural phase transition temperature and its associated hysteresis in VO2 have been controlled by high valent dopant induced local structural modification which acts as phase nucleation site during phase transformation. Monoclinic phase intensity loops plotted against temperature has been observed to exhibit thermal hysteresis. It is shown that the size, shape and central position of hysteresis loop depend on stoichiometry and doping concentration. Highest reduction in phase transformation temperature and thermal hysteresis width has been observed in case of W+6-Mo+6 co-doping and W+6 doping, respectively. Hence energy barrier associated with the structural phase transition has been successfully manipulated to vary Tc and hysteresis width. These findings have implications for designing the phase switching devices and smart window applications.
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Research context
OpenAlex topics: Transition Metal Oxide Nanomaterials · Advanced Memory and Neural Computing · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of physics, Quaid-i-Azam University , Islamabad 45320, Pakistan
References (28)
Show source-provided references
1. Study on optical and electrical switching properties and phase transition mechanism of Mo6+-doped vanadium dioxide thin films10.1023/b:jmsc.0000011503.22893.f4 ↗
2. Phase transformation and semiconductor-metal transition in thin films of VO2 deposited by low-pressure metalorganic chemical vapor deposition10.1063/1.1518148 ↗
3. Effect of W addition on the electrical switching of VO2 thin films10.1063/1.4944855 ↗
4. A steep-slope transistor based on abrupt electronic phase transition10.1038/ncomms8812 ↗
5. Photoinduced insulator-metal phase transition and the metallic phase propagation in VO2 films investigated by time-resolved terahertz spectroscopy10.1063/1.4832776 ↗
6. Strain effects in low-dimensional transition metal oxides10.1016/j.mser.2010.08.001 ↗
7. Design of electrically driven hybrid vanadium dioxide (VO2) plasmonic switches10.1364/oe.20.023598 ↗
8. The two components of the crystallographic transition in VO210.1016/0022-4596(71)90091-0 ↗
9. Optical properties of VO2 films at the phase transition: Influence of substrate and electronic correlations10.1063/1.4961406 ↗
10. Electron localization induced by uniaxial stress in pure VO210.1103/physrevlett.35.873 ↗
11. Control of the metal-insulator transition in vanadium dioxide by modifying orbital occupancy10.1038/nphys2733 ↗
12. A thermodynamic model of hysteresis in phase transitions and its application to rare earth oxide systems10.1063/1.434557 ↗
13. Mott memory and neuromorphic devices10.1109/jproc.2015.2431914 ↗
14. Metastability phenomena in VO2 thin films10.3390/condmat2010010 ↗
15. Strain dynamics of ultrathin VO2 film grown on TiO2(001) and the associated phase transition modulation10.1021/nl501480f ↗
16. Distinctive finite size effects on the phase diagram and metal–insulator transitions of tungsten-doped vanadium (iv) oxide10.1039/c0jm03833d ↗
17. Stoichiometry engineering of monoclinic to rutile phase transition in suspended single crystalline vanadium dioxide nanobeams10.1021/nl103925m ↗
18. First-principles study of the effect of oxygen vacancy and strain on the phase transition temperature of VO210.1039/c6ra19121e ↗
19. Design of vanadium oxide structures with controllable electrical properties for energy applications10.1039/c3cs35508j ↗
20. Growth and phase transition characteristics of pure M-phase VO2 epitaxial film prepared by oxide molecular beam epitaxy10.1063/1.4823511 ↗
21. Local atomic and electronic arrangements in WxV1−xO210.1103/physrevb.31.1000 ↗
22. Effect of Mo-W Co-doping on semiconductor-metal phase transition temperature of vanadium dioxide film10.1016/j.tsf.2008.05.021 ↗
23. Electrical property of Mo-doped VO2 nanowire array film by melting−quenching sol−gel method10.1021/jp0642701 ↗
24. Evolution of metallicity in vanadium dioxide by creation of oxygen vacancies10.1103/physrevapplied.7.034008 ↗
25. Local coexistence of VO2 phases revealed by deep data analysis10.1038/srep29216 ↗
26. Unraveling metal-insulator transition mechanism of VO2 triggered by tungsten doping10.1038/srep00466 ↗
27. Mott transition in VO2 revealed by infrared spectroscopy and nano-imaging10.1126/science.1150124 ↗
28. Striped nanoscale phase separation at the metal–insulator transition of heteroepitaxial nickelates10.1038/ncomms13141 ↗