Magnetic and optical properties of Zn1−xCoxO thin films prepared by plasma enhanced chemical vapor deposition
| Autor: | Z.R. Mo, Lu Zhijin, Fengming Zhang, W.Q. Zou, Y.W. Du, Zhijin Lu |
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| Rok vydání: | 2008 |
| Předmět: |
Photoluminescence
Materials science Condensed matter physics Analytical chemistry Condensed Matter Physics Electronic Optical and Magnetic Materials Magnetization Carbon film Plasma-enhanced chemical vapor deposition Curie temperature Crystallite Electrical and Electronic Engineering Thin film Wurtzite crystal structure |
| Zdroj: | Physica B: Condensed Matter. 403:3686-3688 |
| ISSN: | 0921-4526 |
| DOI: | 10.1016/j.physb.2008.06.012 |
| Popis: | Polycrystalline Zn 1− x Co x O ( x =0, 0.02, 0.06) thin films have been synthesized by plasma enhanced chemical vapor deposition (PECVD). The structural, optical, and magnetic properties of the films were investigated. It is shown from X-ray analyses that all the films have wurtzite structure. In photoluminescence (PL) spectra, near band edge (NBE) emissions were observed in all of the films with a blue shift with the increase of Co content. The results from both the X-ray and PL spectra analysis reveal that Co ions substitute for the Zn 2+ ions of the ZnO matrix. The field dependence and temperature dependence of magnetization demonstrate that the Zn 1− x Co x O film materials are ferromagnetic with Curie temperature over 300 K. |
| Databáze: | OpenAIRE |
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