Authors : S. B. Lengule, P. R. Moharkar, S. R. Gawali and K. G. Rewatkar
Page Nos : 178-181
Description :
The series of aluminium ions substituted calcium hexaferrite with composition Ca2Zn2Fe12-xAlxO22 (0≤x≤1) were synthesized by sol-gel auto-combustion method. The X-ray diffraction pattern at room temperature showed the prepared samples have a single Y-type hexagonal ferrite phase and the effect of aluminium ions substitution on the unit cell parameters, density and porosity has been studied. The acoustic properties of the substituted calcium hexaferrite have been investigated by ultrasonic pulse technique. The acoustic studies indicate that the increase in elastic modulii with Al3+ ions concentration weaken the inter-atomic bonding between various atoms in the substituted calcium hexaferrite.
Key words: Y-type hexagonal ferrite, Acoustic properties, Sol-gel auto-combustion method.
