Enhanced Magnetic Permeability in Ni0.55−yCoyZn0.35Mg0.10Fe2O4 Synthesized by Sol-Gel Method
| Autor: | D. R. S. Gangaswamy, G. S. V. R. K. Choudary, M. Chaitanya Varma, K.H. Rao, Sundar G. Bharadwaj |
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| Rok vydání: | 2018 |
| Předmět: |
inorganic chemicals
010302 applied physics Materials science Analytical chemistry chemistry.chemical_element 02 engineering and technology equipment and supplies 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Magnetization Magnetic anisotropy chemistry Permeability (electromagnetism) 0103 physical sciences Ferrite (magnet) Curie temperature Particle size 0210 nano-technology Relative permeability Cobalt |
| Zdroj: | Journal of Superconductivity and Novel Magnetism. 31:3753-3760 |
| ISSN: | 1557-1947 1557-1939 |
| DOI: | 10.1007/s10948-018-4638-3 |
| Popis: | Growth in permeability with increasing cobalt content in Ni-Zn ferrite is a rare phenomenon. The rise in magnetic anisotropy associated with the cobalt, in general, suppresses the relative permeability of the material. However, cobalt substituted nickel-zinc ferrite of composition, Ni0.55−yCoyZn0.35Mg0.10Fe2O4 (y= 0.00, 0.04, 0.08, 0.12, 0.16, 0.20), synthesized by sol-gel method, showed an enhanced relative initial permeability from 100 to 220 in the frequency range 60 Hz to 50 MHz with increasing cobalt content. The factors causing the permeability increase have been discussed in terms of the observed variations in particle size, saturation magnetization, and Curie temperature. The magnetization process under the influence of cobalt has been illustrated in detail with the help of dM/dH versus magnetization curves. |
| Databáze: | OpenAIRE |
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