Infrared Spectroscopy and Elastic Properties of Copper Substituted Nickel Zinc Ferrite

摘要

Nanocrystalline copper substituted nickel zinc ferrites with composition,Ni_(0.5)CuxZn_(0.5-x)Fe2O4(x = 0.0,0.1,0.2,0.3,0.4 and 0.5)synthesized by sol-gel auto combustion technique.All the precursors sintered at 400 °C for 4 h.The stoichiometry and single phase cubic spinel structure confirmed from ED AX and XRD patterns,respectively.Morphology studied by SEM technique.Infrared spectrum of prepared samples investigated at room temperature in the range of 800-300 cm~(-1).Three major IR absoiption bands of tetrahedral frequency in the range of 578-551 cm~(-1),octahedral frequency in the range of 422-406 cm~(-1)and v3 in the range of 352.08 to 325.01 cm”‘observed.The stiffness constant(C_(11)and C_(12)),elastic moduli,such as Young's modulus,rigidity modulus,Poisson's ratio and Debye temperature were determined from IR and structural data.The stiffness constant(C_(11)and C_(12))and elastic moduli decreases while Debye temperature increases with copper substitution.