Abstract
Nickel ferrite nanoparticles were syntheiszed by sol-gel method using urea as a fuel. The nanoparticles were characterized by XRD, SEM,TGA, FTIR and UV–visible techniques. TGA showed that the gel decomposed around 230∘C followed by crystallization. XRD revealed the formation of spinel structure with space group of Fd3m. Scherrer and Williamson-Hall method is applied to determine crystal size and strain present in sample. FTIR showed fundamental absorption bands related to octahedral and tetrahedral sites, in the range 400–600cm-1. SEM showed agglomerated flakes having void and pores on the surface. UV–vis indicated the bandgap of sample is 5.5eV.
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