Structural and Magnetic study on Al substituted MgZn mixed ferrite powders prepared by Sol-Gel method
| Autor: | C. Ramesh, K. Maniysundar, S. Selvanandan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Spinel 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Ion Crystallography Lattice constant Octahedron 0103 physical sciences X-ray crystallography engineering Ferrite (magnet) Crystallite 0210 nano-technology Sol-gel |
| Zdroj: | Materials Today: Proceedings. 3:1363-1369 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2016.04.016 |
| Popis: | Al substituted mixed ferrites of Zn 0.3 Mg 0.7 Al x Fe (2-x) O 4 (x=0.0, 0.1, 0.2, 0.3, 0.4) prepared by sol-gel auto combustion method. The structural studies using XRD and SEM reveal that the obtained samples were in cubic structure with single phase. As the Al substitution increases in this ferrite system the lattice constant decreases from 8.435A 0 to 8.362A 0 . The average crystallite size calculated using Debye-Scherrer equation and is in the range 26 to 92 nm. The variation in lattice constant and crystallite size attribute due to the replacement of Fe 3+ by smaller radii of the Al 3+ ion. The magnetic measurements using Vibration Sample Magnetometer (VSM) indicates that the Al 3+ preferably occupy B-sites rather than A site. FTIR spectra exhibited two prominent absorption bands in ν 1 and ν 2 , which confirms the redistribution of ions among tetrahedral and octahedral site and spinel nature of these ferrites. |
| Databáze: | OpenAIRE |
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