X-ray photoelectron spectroscopy and low temperature Mössbauer study of Ce3+ substituted MnFe2O4
| Autor: | V. Jagadeesha Angadi, I. C. Sathish, Mehaboob Pasha, K. Manjunatha, A. T. Kozakov, T. A. Lastovina, A.V. Nikolskii, Stanislav P. Kubrin, K. M. Srinivasamurthy |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Spinel Analytical chemistry chemistry.chemical_element Quadrupole splitting Manganese engineering.material Cubic crystal system Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials X-ray photoelectron spectroscopy chemistry Octahedron 0103 physical sciences Mössbauer spectroscopy engineering Crystallite Electrical and Electronic Engineering |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 30:10162-10171 |
| ISSN: | 1573-482X 0957-4522 |
| Popis: | Spinel Mn2+ Fe 2−x 3+ Ce x 3+ O4 (where x = 0.01–0.05) polycrystalline nanoparticles were fabricated by solution combustion method using glucose and urea as fuels. X-ray diffractogram (XRD) proved the witness of the cubic crystal consort of products which have the crystallite sizes in between 12 and 8 nm. The size of the sample was accomplished via transmission electron microscopy. The elemental composition of iron and manganese ions valences of MnCexFe2−xO4 samples were analyzed by X-ray photoelectron spectroscopy. XPS data reveals iron in all samples was trivalent; manganese was divalent, although tetravalent manganese ions were present on the surface of particles. Magnetic characterization of samples was done via Mossbauer spectroscopy at room temperature and at low temperatures (15 K). The Mossbauer analysis determines the consequence of Ce3+ substitution on isomer shift and quadrupole splitting of all samples. The low temperature Mossbauer spectroscopy results indicate that the presence of Ce3+ ions in the octahedron sites causes the decrease in the concentration of Fe3+ ions. |
| Databáze: | OpenAIRE |
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