Temperature dependence of Mn 1.56 Co 0.96 Ni 0.48 O 4 thin films optical properties by spectroscopic ellipsometry
| Autor: | Liang Bian, Hongguang Wang, Pengjun Zhao, Ai Min Chang, Chao Ma, Lei Wang, Jin Bao Xu |
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| Rok vydání: | 2014 |
| Předmět: |
Range (particle radiation)
Materials science Mechanical Engineering Spinel Analytical chemistry Physics::Optics Atmospheric temperature range Molar absorptivity engineering.material Condensed Matter Physics Mechanics of Materials Dispersion (optics) engineering Spectroscopic ellipsometry General Materials Science Thin film Refractive index |
| Zdroj: | Materials Letters. 136:225-228 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2014.08.025 |
| Popis: | The optical properties of spinel Mn1.56Co0.96Ni 0.48O4 thin films have been investigated by spectroscopic ellipsometry in the temperature range from 20 to 260 °C. By fitting the measured ellipsometric parameter data with a three-layer model by Tauc-Lorentz oscillator dispersion formula, the refractive index and extinction coefficient of the thin films are determined in the spectral range of 280-850 nm. The refractive index decreases in the short-wavelength region but increases in the long-wavelength region with increasing temperature. The extinction coefficient increases with increasing temperature in all visible region. |
| Databáze: | OpenAIRE |
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