• Nehal Ahmed
• Satish Shelke
• G.H.Kale
• V. B. Kawade
• R.H.Kadam

Abstract Nanocrystalline powder of the composition Ni0.5Co0.5FeAlO4 was successfully obtained by using sol-gel auto-combustion technique. The decomposition pattern was obtained by using thermo-gravimetric analysis. The X-ray diffraction patterns shows the reflections for the planes (220), (311), (222), (422), (333), (440) and (533) which confirms the cubic spine structure of the present samples. By using the XRD data the structural parameters like lattice parameter, X-ray density, percentage porosity and crystallite size was obtained. The average grain size obtained from SEM micrographs shows minimum size (76nm) at lower temperature (5000C).and minimum size for higher temperature (8000C) (139nm). The hysteresis curves show normal ferrimagnetic behaviour for all the samples. For lower sintering temperature the saturation magnetization is least while as it increases with increase in sintering temperature and shows highest value for the sintering temperature 8000C. The magnetic moment increases with increasing sintering temperature. Keywords: Annealing temperature, lattice constant, and saturation magnetization.

Keywords: Annealing temperature, lattice constant, and saturation magnetization.

"Effect of annealing temperature on the structural and magnetic properties of Ni-Co-Fe-Al-O ferrite", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 2, page no.1186-1195, February-2018, Available :http://www.jetir.org/papers/JETIR1802245.pdf

"Effect of annealing temperature on the structural and magnetic properties of Ni-Co-Fe-Al-O ferrite", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 2, page no. pp1186-1195, February-2018, Available at : http://www.jetir.org/papers/JETIR1802245.pdf