Influence of Annealing Temperature on the Properties of ZnGa2O4 Thin Films by Magnetron Sputtering
| Autor: | Pi-Chuen Tsai, Kuo-Feng Liu, Wei-Kai Wang, Shih-Yung Huang, Yi-Jie Xu |
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| Rok vydání: | 2019 |
| Předmět: |
Diffraction
Materials science magnetron sputtering thin film Annealing (metallurgy) microstructure Analytical chemistry Surfaces and Interfaces Sputter deposition Microstructure ZnGa2O4 Surfaces Coatings and Films Transmission electron microscopy Materials Chemistry Sapphire annealing Crystallite Thin film |
| Zdroj: | Coatings Volume 9 Issue 12 |
| ISSN: | 2079-6412 |
| DOI: | 10.3390/coatings9120859 |
| Popis: | Zinc gallate (ZnGa2O4) thin films were grown on sapphire (0001) substrate using radio frequency (RF) magnetron sputtering. After the thin film deposition process, the grown ZnGa2O4 was annealed at a temperature ranging from 500 to 900 ° C at atmospheric conditions. The average crystallite size of the grown ZnGa2O4 thin films increased from 11.94 to 27.05 nm as the annealing temperature rose from 500 to 900 ° C. Excess Ga released from ZnGa2O4 during thermal annealing treatment resulted in the appearance of a Ga2O3 phase. High-resolution transmission electron microscope image analysis revealed that the preferential crystallographic orientation of the well-arranged, quasi-single-crystalline ZnGa2O4 (111) plane lattice fringes were formed after the thermal annealing process. The effect of crystallite sizes and lattice strain on the width of the X-ray diffraction peak of the annealed ZnGa2O4 thin films were investigated using Williamson-Hall analysis. The results indicate that the crystalline quality of the deposited ZnGa2O4 thin film improved at higher annealing temperatures. |
| Databáze: | OpenAIRE |
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