Effect of Zn2+ ions on structural, optical, magnetic, and impedance response of Znx@Ni1–xFe2O4 core materials prepared by two-step polyacrylamide gel method
| Autor: | C. P. Anilkumar, S. Shailajha, M. S. Kairon Mubina, R. Sankaranarayanan |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Band gap Rietveld refinement Polyacrylamide Analytical chemistry Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Absorbance chemistry.chemical_compound Ferromagnetism Octahedron chemistry X-ray photoelectron spectroscopy Permeability (electromagnetism) 0103 physical sciences Electrical and Electronic Engineering |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 31:11833-11846 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-020-03737-5 |
| Popis: | Spinel ferrite nanocomposites of Znx@Ni1–xFe2O4 (x = 0, 0.2, 0.4, 0.6, and 0.8) system were developed by two-step polyacrylamide sol–gel method. The two phases (Fd-3m and P63mc) of the nanocomposites were confirmed by applying XRD results using the Rietveld refinement program. The addition of ‘Zn’ content causes the occupations of Zn2+ ions over the tetrahedral and octahedral sites of Ni2+/Fe3+ ions were analyzed by XPS spectra. The broad absorbance and band gap values of the samples were obtained by UV-DRS. The morphology and elemental percentage of the nanocomposites were determined by using FESEM and EDS spectrum. In VSM and impedance analysis, the enhanced ferromagnetic and the impedance behavior of material was analyzed and the saturation magnetization enhanced from 32 to 54 emu/g until x = 0.4, then decreased to 28 emu/g. The permeability has enhanced as 8.76% and the impedance value with and without magnetic field attains maximum at x = 0.4. |
| Databáze: | OpenAIRE |
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