DIELECTRIC AND FERROELECTRIC PROPERTIES OF ACETATE-DERIVED PBZT AND PSZT THIN-FILMS

Ferroelectric thin films in the PBZT (lead barium zirconate titanate) and PSZT (lead stannate zirconate titanate) compositional systems were prepared from as-received acetate precursors. The water-soluble PBZT and PSZT solutions consisting of approximately ten weight percent soli ds (oxide content) were found to be stable for an extended period of t ime. Multiple-layer thin films of these solutions were fabricated via a spin coating technique and sintered at 650 - 700 degrees C from two to three minutes per layer. The dielectric and ferroelectric hysteresi s loop properties of these films were measured and compared with bulk properties. These results show that the thin film properties for both the PSZT and PBZT systems are substantially the same as those of their bulk material counterparts. On the basis of the dielectric and hyster esis loop data, phase diagrams for both systems were constructed.