CVD PREPARED Mn-DOPED ZnO NANOWIRES
| Autor: | Nguyen Xuan Nghia, Roger Vincent, The-Long Phan, David Cherns |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | ASEAN Journal on Science and Technology for Development, Vol 24, Iss 1&2, Pp 125-130 (2017) |
| ISSN: | 2224-9028 0217-5460 |
| Popis: | Mn-doped ZnO nanowires prepared by chemical vapor deposition (CVD) were obtained in the temperature range of 450–500°C. X-ray diffraction patterns, SEM and TEM images indicate that crystals with a hexagonal structure grow along the c axis. At low Mn-doped concentrations, photoluminescence (PL) and Raman scattering (RS) spectra are almost independent of the Mn doping. However, the increase in concentration of Mn above 1.6 at% weakens significantly the PL signal and the RS-lines intensity in the low wavenumber range of 300–480 cm-1, and concurrently increases the RS-lines intensity in the higher wavenumber range of 480-700 cm-1.. Magnetic measurements determined the Curie temperature of Mn-doped ZnO nanowire to be about 37 K. |
| Databáze: | OpenAIRE |
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