Structural, optical and magnetic characterizations of nanoparticles spinel Zn(1-)M Al2O4 (M = Co and Ni) synthesized by microwave combustion method
| Autor: | A.A. Abu-Sehly, M.I. Abd-Elrahman, Noha Younis, Nasser Afify, A. Abu El-Fadl |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering Aluminate Spinel Analytical chemistry chemistry.chemical_element Infrared spectroscopy 02 engineering and technology Zinc engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Absorbance Paramagnetism chemistry.chemical_compound Magnetization chemistry Mechanics of Materials engineering General Materials Science 0210 nano-technology Superparamagnetism |
| Zdroj: | Materials Science and Engineering: B. 271:115316 |
| ISSN: | 0921-5107 |
| DOI: | 10.1016/j.mseb.2021.115316 |
| Popis: | Spinel Zn(1-x)MxAl2O4 (M = Co and Ni) nanoparticles were prepared using the microwave combustion technique. Different compositions of ratios with formula Zn(1-x)MxAl2O4 (0.5 ≤ x ≤ 1.0) were prepared by substitution of Zn+2 ions with Co+2 and Ni+2 ions. Structural properties of the resultant spinel compositions were characterized by Energy Dispersive X-ray, X-ray diffraction and infrared spectroscopy. The surface topology and determination of particle size of the nanopowder were characterized by high-resolution scanning electron microscope. Magnetization and spectra of the optical absorption at room temperature were measured. The effects of substitution Co+2 and Ni+2 cations on optical and magnetic properties of ZnAl2O4 spinel were studied. Analysis of UV–Vis absorbance showed that the optical band gaps of the samples decrease linearly with increasing Co+2 and Ni+2 ratios. Vibrating Sample Magnetometer study showed that an adding of Co+2 and Ni+2 ions to ZnAl2O4 leads to converse diamagnetic zinc aluminate to paramagnetic and superparamagnetic materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect