Syntheses of new spinels Zn1-xFexAl2O4 nanocrystallines structure: Optical and magnetic characteristics

• Published in: Journal of alloys and compounds Vol. 795; pp. 114 - 119
• Main Authors: El-Fadl, A. Abu, Abd-Elrahman, M.I., Younis, Noha, Afify, N., Abu-Sehly, A.A., Hafiz, M.M.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 30.07.2019; Elsevier BV
• Subjects: Absorption spectra; Chemical synthesis; Composition; Image transmission; Magnetic properties; Morphology; Nanocrystalline; Nanocrystals; Nanoparticles; Optical gap; Optical properties; Spinel; Substitutes; Transmission electron microscopy; X-ray diffraction; Zinc; Zinc iron aluminate; Zinc iron aluminate; Optical gap; Nanocrystalline; Magnetic properties
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2019.05.008

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. •New nanocrystalline spinels of Zn1-xFexAl2O4 were synthesized by combustion.•XRD and FTIR spectra confirm the spinel structure for each Zn1-xFexAl2O4 sample.•The energy band gap decreases with increasing the ratio of Fe ions.•The magnetization increases with increasing Fe ions content.