a process for making ceramic composites includes the steps of : a ) forming a polymer composition into a three - dimensional mold ; b ) filling said three - dimensional mold with one or more ceramic containing compositions ; c ) heating said filled mold to dry and sinter the ceramic ; d ) removing at least a portion of said three - dimensional mold thereby forming voids ; and e ) filling the voids with a second composition which has a piezoelectric coefficient which is substantially different from the piezoelectric coefficient of said ceramic structure . steps a through e yield a controlled , non - random piezoelectric ceramic composite having 2 - 3 , 3 - 2 or 3 -- 3 connectivity with respect to the sintered ceramic and the second composition throughout the composite .