Elastic behaviour of Cu-Zn ferrites

The composition dependence of elastic properties of mixed Cu-Zn ferrites ar e studied using ultrasonic pulse transmission technique at 1 MHz. The value s of Young's moduli (E), the rigidity moduli (n), Debye temperature (theta( D)) and mean sound velocity (V-m) of mixed Cu-Zn ferrite specimens are calc ulated from longitudinal (V-l) and shear (V-s) velocities. The elastic modu li of the ferrites are corrected to zero porosity using Hasseleman and Fulr aths formulae. The variation of elastic moduli with composition has been in terpreted on the basis of binding forces between the spinel lattice. (C) 19 99 Elsevier Science B.V. All rights reserved.