Can zinc aluminate-titania composite be an alternative for alumina as microelectronic substrate?

Alumina, thanks to its superior thermal and dielectric properties, has been the leading substrate over several decades, for power and microelectronics circuits. However, alumina lacks thermal stability since its temperature coefficient of resonant frequency (τ) is far from zero (-60 ppmK). The present paper explores the potentiality of a ceramic composite 0.