S. Parida

Influence of Ball Milling Parameters on the Crystallite Size of Ba(Ti1-xZrx)O3

Ba(Ti1-xZrx)O3 ceramic powders were prepared by solid state reaction. The mono phase powders were then used to produce nano powder using high-energy ball milling. The crystallite sizes of each composition were investigated by varying the milling speed from 150 to 350 rpm fixing the milling time at 10 h and the milling time from 10 to 90 h, at a fixed speed of 250 rpm. X-ray diffraction analysis of the powder showed the single phase perovskite structure of Ba(Ti1-xZrx)O3 powders. The increase in milling speed and milling time showed reduction of crystallite size to a minimum value which increases with further increase in milling time. FTIR analysis of Ba(Ti1-xZrx)O3 ceramic powders before and after ball milling illustrated a change in force constant of M-O bond.