Effect of Al and Fe doping in ZnO on magnetic and magneto-transport properties
| Autor: | Malvika Tripathi, R. J. Choudhary, Deodatta M. Phase, Deepika, Santosh Kumar, Pratyush Vaibhav, Aman Kumar, Ritesh Kumar |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Magnetic moment Doping Exchange interaction Analytical chemistry 02 engineering and technology Substrate (electronics) 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Pulsed laser deposition Paramagnetism symbols.namesake Nuclear magnetic resonance 0103 physical sciences symbols Thin film 010306 general physics 0210 nano-technology Raman spectroscopy |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 419:68-73 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2016.06.007 |
| Popis: | The structural, magnetic and magneto-transport of undoped ZnO, Zn 0.97 Al 0.03 O, Zn 0.95 Fe 0.05 O and Zn 0.92 Al 0.03 Fe 0.05 O thin films grown on Si(100) substrate using pulsed laser deposition were investigated. The single phase nature of the films is confirmed by X-ray diffraction and Raman spectroscopy measurements. The possibility of Fe metal cluster in Fe doped/co-doped films is ruled out by Fe 2p core level photoelectron spectra. From O 1s core level spectra it is observed that oxygen vacancy is present in all the films. The undoped ZnO film shows magnetic ordering below ∼175 K, whereas Fe doped/codoped samples show magnetic ordering even at 300 K. The Al doped sample reveals paramagnetic behavior. The magneto-transport measurements suggest that the mobile carriers undergo exchange interaction with local magnetic moments. |
| Databáze: | OpenAIRE |
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