As a final report of this program, effects of a-Fe₂O₃ raw material powders on the formation and sintering of ZnFe₂O₄ have been studied. It is shown that the ferrite formation is not a simple function of primary particle size of α-Fe₂O₃. Densification behavior of ZnFe₂O₄ is well correlated to that of corresponding α-Fe₂O₃ powders. The temperature at which the initial shrinkage starts is a function of primary particle size of ZnFe₂O₄, as is the case in α-Fe₂O₃. It is suggested that higher calcination temperatures are favorable for obtaining uniform microstructures.