Effect of Ce and Cu co-doping on the structural, morphological, and optical properties of ZnO nanocrystals and first principle investigation of their stability and magnetic properties
| Autor: | M. Bououdina, L. John Kennedy, J. Judith Vijaya, J. Arul Mary, Y. Song, J.H. Dai |
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| Rok vydání: | 2015 |
| Předmět: |
Magnetization
Materials science Nanocrystal Diffuse reflectance infrared fourier transform Band gap Scanning electron microscope Doping X-ray crystallography Analytical chemistry Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Wurtzite crystal structure |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 66:209-220 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2014.10.019 |
| Popis: | Ce, Cu co-doped ZnO (Zn1−2xCexCuxO: x=0.00, 0.01, 0.02, 0.03, 0.04 and 0.05) nanocrystals were synthesized by a microwave combustion method. These nanocrystals were investigated by using X-ray diffraction (XRD), UV–visible diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), and vibrating sample magnetometer (VSM). The stability and magnetic properties of Ce and Cu co-doped ZnO were probed by first principle calculations. XRD results revealed that all the compositions are single crystalline. hexagonal wurtzite structure. The optical band gap of pure ZnO was found to be 3.22 eV, and it decreased from 3.15 to 3.10 eV with an increase in the concentration of Cu and Ce content. The morphologies of Ce and Cu co-doped ZnO samples confirmed the formation of nanocrystals with an average grain size ranging from 70 to 150 nm. The magnetization measurement results affirmed the antiferro and ferromagnetic state for Ce and Cu co-doped ZnO samples and this is in agreement with the first principles theoretical calculations. |
| Databáze: | OpenAIRE |
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