Synthesis and characterisation of nanocrystalline ferrite materials Mg Ni Zn by sol-gel method

Abstract

Nanoferrite crystalline aligns of Ni2+ replaced Mg-Ni-Zn-Fe spinel ferrite having chemical formula Mg0.7-xNixZn0.3Fe2O4 (x = 0.2, 0.4, 0.6) is successfully synthesized by auto-combustion sol-gel route. Citric acid was used as a energy( fuel ) in this process and ratio was 3:1for citric acid to metal nitrate. The crystal structure as well as also phase of Mg Ni Zn was studied by XRD, SEM and FTIR. The crystal size, lattice constant, cation distributionand porisivity was determined by XRD method. To deduce structural study and redistribution of cations between octahederal and tetrahederal site of Mg Ni Zn material FTIR spectroscopy is used. Morphological study says that the formation of growth of grain is due to sintering temperature. By using Hysteresis loop technique magneton no. as well as saturation magnetism is determined. With raising Ni2+ density x in Mg-Ni-Zn-Fe ferrite the saturation magnetization increases. At relatively low temperature by using auto-combustion method named Sol-gel. The nanocrystelline Mg0.7NixZn0.3 were synthesized through nitrate citrate. It is unique chemical gelation combustion and the combustion process. For this x =.2, x =.4 and x =.6. The developed nanoferrites were furnaced at 4000 C and 7000 C for 120 min. respectively. After successful chemical reaction of their metal nitrate nanoferrites were obtained as a dried gel by using catalyst citric acid. The prepared nanoferrite powders were characterized by XRD, SEM, FTIR and VSM. The synthesized material is ferrite is confirmed by the FTIR. By using scherrer method X-ray reveled that the size of the nanocrystalline ferrite material Mg Ni Zn Fe2O4 is in between 42.05 nm. to 95.14 nm. By VSM technique Magnetization and hysteresis were measured.