Structural, vibrational, electrical, and magnetic properties of mixed spinel ferrites Mg1-xZnxFe2O4 nanoparticles prepared by co-precipitation
| Autor: | Bin Chen, Saadah Abdul Rahman, Ning Dai, Hajra Saqib, Resta Susilo |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Ionic radius Rietveld refinement Spinel Analytical chemistry General Physics and Astronomy 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences lcsh:QC1-999 Magnetization Paramagnetism symbols.namesake Lattice constant Ferrimagnetism 0103 physical sciences engineering symbols 0210 nano-technology Raman spectroscopy lcsh:Physics |
| Zdroj: | AIP Advances, Vol 9, Iss 5, Pp 055306-055306-6 (2019) |
| ISSN: | 2158-3226 |
| Popis: | Mg1-xZnxFe2O4 (where x = 0.0, 02, 0.4, 0.5, 0.6 and 0.8) nanoparticles were synthesized using co-precipitation. A detailed investigation of the structural, electrical, magnetic and optical properties was carried out for the synthesized samples using X-ray diffraction (XRD), current-voltage (I-V) measurements, vibrating sample magnetometer (VSM) and Raman spectroscopy, respectively. Rietveld refinement fitting revealed that the structure of these samples is cubic spinel with space group Fd3m, and the lattice parameter decreases linearly with increasing Mg-content due to the smaller ionic radius of the Mg2+ ion. Five Raman modes were predicted for the spinel structure, and the A1g Raman mode split into three branches, where each one belong to each ions like Zn2+, Mg2+, and Fe3+ in the tetrahedral positions. The magnetization showed an increasing fashion with the increasing Mg concentration due to the cation rearrangement at the tetrahedral and octahedral sites. The isothermal magnetization curves collected at room temperature showed a paramagnetic (PM) to ferrimagnetic (FiM) transition as the Mg content was increased in Mg1-xZnxFe2O4. Both magnetic and structural properties of ZnMg-ferrite nanoparticles strongly depend upon the Mg2+ cation doping percentage. Current-voltage (I-V) measurements show that electrical resistivity increases with increasing Mg content. |
| Databáze: | OpenAIRE |
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