Polycrystalline ferrite samples having a chemical formula Ni0.7-xCuxZn0.3Fe2O4 (where x=0.05 to 0.50 insteps of 0.05 variation) was prepared through the conventional ceramic method. The infra red spectra were recorded at the room temperature using FT-IR spectra for all samples in the range 4000 cm-1 to 400 cm-1 on MAGNA 550 Nicollet Instruments Corporation; the absorption spectra recorded 400 cm-1 to 4000 cm-1. The spectrum recorded transmittance (%) versus wave number (cm-1) and the spectrum confirms the spinel structure. The study of FT-IR spectra is very important tool for getting the ions positions in the lattice.
FT-IR spectra, Copper substitution, Vibrational investigations