STM Journals Peer-reviewed research from Consortium e-Learning Network

Nano Trends – A Journal of Nano Technology & Its Applications

Study of Elastic Properties of Copper Substituted Nickel – Zinc Nano Ferrites Through IR-Spectroscopy

  1. V Lakshmi Savithri
  2. G Sunita sundari
  3. Ch. S.L.N. Sridhar
  4. Ch. S. Lakshmi

Abstract

Nano crystalline Ni 0.65 Zn 0.35 Cu x Fe (2-2x/3) O 4, (x ranging from 0 – 0.05 in steps of 0.01) ferrites synthesized via hydrothermal route are characterized by FTIR spectroscopy.  IR spectra of prepared ferrites demonstrated the two fingerprint absorption bands of spinels in the range of 400-600 cm-1.  Lattice constant, X-ray density values obtained from XRD patterns used for evaluating the tetrahedral site and octahedral site force constants (Ft, Fo). Stiffness constants (C11, C12), elastic wave velocities i.e., longitudinal wave velocity (Vl), transverse wave velocity (Vt), and mean wave velocity (Vm) are evaluated and reported.  Poisson’s ratio (), Moduli of elasticity (Young’s Modulus(E), Rigidity Modulus (G) and Bulk Modulus (K) are determined. Pauling’s electronegativities almost remains constant indicating, no substantial deviation in the strength of the ionic bond with copper substitution. Debye temperature determined using Waldron formula and Anderson formula are observed   increasing with copper addition. Our results provide a well considerate of compositional dependence of elastic behaviour of Ni-Zn nano ferrites and showing strong solid material nature suggested for their extensive applications.

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