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| Article Name : | | | IMPACT OF ALUMINIUM AND ZINC SUBSTITUTION ON THE STRUCTUREAL AND MAGNETIC PROPERTIES OF SOL-GEL AUTO COMBUSTION DERIVED NANOSIZED Co-Ni-Zn MIXED FERRITES | | Author Name : | | | Vinod Tukaram, Dhanraj. R. mane, Ramkrishna H. Kadam and Ankush B. Kadam | | Publisher : | | | Ashok Yakkaldevi | | Article Series No. : | | | GRT-4948 | | Article URL : | |  | Author Profile View PDF In browser | | Abstract : | | | Nano-crystalline ferrites Co0.5Ni0.5-xZnxAlyFe2-yO4 with stoichiometric proportion (x= 0.0, ≤ 0.4. y= 0, 0.2, ≤ 0.8) were synthesized by the Sol-gel auto combustion method. The doping effect of Al-Zn on crystalline phase, particle size, and saturation magnetization (Ms) are investigated. The resultant powders were sintered at 800°C for 4 hours and were characterized by XRD, FTIR and VSM. XRD analysis showed cubic spinel and the crystallite sizes (D) in the range of 46-7nm. The values of lattice parameter (a) and X-ray density (dx), Bulk density (dB), Hopping length at A-site LA and at B-site LB, Specific surface area (S) decreased with the increase of Al-Zn content. Porosity (P) increase from 35.87 - 41.81% and The Ms decreases from 41-14emu/g and coercivity decreases with increase in Al-Zn content except for small increase from x= 0.4 and y = 0.8. Nano-crystalline ferrites Co0.5Ni0.5-xZnxAlyFe2-yO4 with stoichiometric proportion (x= 0.0, ≤ 0.4. y= 0, 0.2, ≤ 0.8) were synthesized by the Sol-gel auto combustion method. The doping effect of Al-Zn on crystalline phase, particle size, and saturation magnetization (Ms) are investigated. The resultant powders were sintered at 800°C for 4 hours and were characterized by XRD, FTIR and VSM. XRD analysis showed cubic spinel and the crystallite sizes (D) in the range of 46-7nm. The values of lattice parameter (a) and X-ray density (dx), Bulk density (dB), Hopping length at A-site LA and at B-site LB, Specific surface area (S) decreased with the increase of Al-Zn content. Porosity (P) increase from 35.87 - 41.81% and The Ms decreases from 41-14emu/g and coercivity decreases with increase in Al-Zn content except for small increase from x= 0.4 and y = 0.8. | | Keywords : | | |
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