Ds. Paik et al., SOL-GEL FABRICATION OF ORIENTATED PZT THIN-FILMS - EFFECT OF BUFFER LAYER IN PROMOTING EPITAXIAL-GROWTH, Ferroelectrics (Print), 211(1-4), 1998, pp. 141-151
Pb(Zr0.52Ti0.48)O-3 (PZT) thin films were deposited onto platinum coat
ed silicon substrates with and without PbTiO3 (PT) buffer layers. PZT
thin films on pure Pt coated Si (100) substrates showed (100) and (110
) orientations with 100 to 80 intensity while these films on the same
substrate with an intermediate PT buffer layer showed preferred (100)
orientation. The intermediate buffer layer seems to promote epitaxial
growth. Increase in thickness of the intermediate buffer layer resulte
d in lowering of remanent polarization and an increase of coercive hel
d parameters.