Structural and magnetic properties and DFT analysis of ZnO:(Al,Er) nanoparticles
| Autor: | W. H. Song, Yan Song, S. Azzaza, Weiwei Cai, M. Ghers, M. Nasiruzzaman Shaikh, R. Ghomri, Mohamed Bououdina, Jun Dai |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Dopant General Chemical Engineering Exchange interaction chemistry.chemical_element Nanoparticle Nanotechnology 02 engineering and technology General Chemistry Zinc 021001 nanoscience & nanotechnology 01 natural sciences Hydrothermal circulation chemistry Chemical engineering Transmission electron microscopy 0103 physical sciences 0210 nano-technology Spectroscopy Wurtzite crystal structure |
| Zdroj: | RSC Advances. 7:32931-32941 |
| ISSN: | 2046-2069 |
| Popis: | The structural, optical and electrical properties of un-doped and (Al,Er) co-doped zinc oxide (ZnO) powders synthesized by hydrothermal method were investigated. The obtained samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive spectroscopy and magnetic measurements. XRD results reveal that the incorporation of Al and Er in ZnO matrix leads to the formation of a nanostructured hexagonal (wurtzite) ZnO structure and α-Al2O3 secondary phase. High-resolution transmission electron microscopy image also shows the hexagonal shape of the ZnO nanoparticles. The magnetic behavior of the nanoparticles changes with concentration of dopant elements due to the competition between oxygen vacancies, secondary phase effect and exchange interaction between dopant elements. |
| Databáze: | OpenAIRE |
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