Epitaxial films of Li12xNb1–xWxO3 prepared by chemical solution deposition
| Autor: | Hellmut Eckert, Xuehua Wu, Jin Hyeok Kim, Yin Xia, Charles D. E. Lakeman, Fred F. Lange |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Materials science
Band gap Mechanical Engineering chemistry.chemical_element Combustion chemical vapor deposition Tungsten Condensed Matter Physics Epitaxy Nanocrystalline material Chemical engineering chemistry Mechanics of Materials Phase (matter) Transmittance General Materials Science Absorption (electromagnetic radiation) |
| Zdroj: | Journal of Materials Research. 13:1596-1606 |
| ISSN: | 2044-5326 0884-2914 |
| DOI: | 10.1557/jmr.1998.0220 |
| Popis: | The growth of epitaxial thin films of Li1–xNb1–xWxO3 from solution precursors on single-crystal LiNbO3 substrates is reported. An all-alkoxide solution readily gave single phase powders after simply mixing the constituent components, whereas an acetate-alkoxide system required additional solution processing stages to give phase pure powders. Heat treatment of films on single-crystal, basal plane LiNbO3 substrates at 600 °C formed a nanocrystalline, porous film which was converted to an epitaxial film after heating to 800 °C. Measurements of second harmonic generation in powders indicate an increase in SHG efficiency with increasing tungsten content. Optical absorption data for films were calculated using reflectance and transmittance spectroscopy data, and indicate a decrease in bandgap with increasing tungsten. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink