Syntheses of new spinels Zn1-Fe Al2O4 nanocrystallines structure: Optical and magnetic characteristics
| Autor: | M.I. Abd-Elrahman, M.M. Hafiz, Nasser Afify, A. Abu El-Fadl, Noha Younis, A.A. Abu-Sehly |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Band gap Mechanical Engineering Spinel Metals and Alloys Analytical chemistry Nanoparticle 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Nanocrystalline material 0104 chemical sciences Ion Magnetization Mechanics of Materials Transmission electron microscopy Materials Chemistry engineering Particle size 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 795:114-119 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2019.05.008 |
| Popis: | Nanocrystalline of ZnAl2O4 spinel was synthesized by employing the microwave combustion method. Different new spinel compositions of formula Zn1-xFexAl2O4, (0.0 ≤ x ≤ 1.0) were prepared by substitution of Zn ions with Fe ions. The as-synthesized resultant material ZnAl2O4 with spinel structure as well as Zn1-xFexAl2O4 compositions were characterized by Energy Dispersive X-ray and X-ray diffraction. Morphology and particle size evaluation of the nanoparticles were characterized by transmission electron microscopy images. The optical absorption spectra and the magnetization were measured at room temperature for each Fe ratio. The substitution effect of Fe ions on the optical and magnetic properties of the original spinel was studied. The optical absorbance showed that the optical band gap decreased with increasing Fe ratio. |
| Databáze: | OpenAIRE |
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