Elastic behaviour of manganese substituted lithium ferrites

The ultrasonic compressional velocity (V,) and shear velocity (V,) in Li-Mn ferrites are measured at room temperature by the ultrasonic pulse transmis sion technique at 1 MHz frequency as well as the values of Young's moduli ( E), rigidity modulus (n), Debye temperature (theta (D)), mean sound velocit y (V-m) and shear velocity (V-s). The variation of elastic moduli with comp osition has been interpreted in terms of binding forces between the atoms o f spinal lattice. (C) 2001 Elsevier Science B.V. All rights reserved.