The production of polycrystalline ceramics from YIG powders, obtained
by reacting Y2O3 and Fe2O3 oxides, is a well understood and controlled
industrial process. However, methods of production via chemical pathw
ays, such as coprecipitation, possess the advantage that the garnet po
wder is more reactive and no longer requires prolonged grinding which
can affect its purity. In this paper, we will show that the mastering
of these two processes enables the production of ceramics possessing g
ood magnetic characteristics for microwave applications. (C) 1997 Else
vier Science S.A.