Stabilizing Perovskite Pb(Mg_0.33Nb_0.67)O₃-PbTiO₃ Thin Films by Fast Deposition and Tensile Mismatched Growth Template.

ABSTRACT: Because of its low hysteresis, high dielectric constant, and strong piezoelectric response, Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ (PMN-PT) thin films have attracted considerable attention for the application in PiezoMEMS, field-effect transistors, and energy harvesting and storage devices. However, it remains a great challenge to fabricate phase-pure, pyrochlore-free PMN-PT thin films. In this study, we demonstrate that a high deposition rate, combined with a tensile mismatched template layer can stabilize the perovskite phase of PMN-PT films and prevent the nucleation of passive pyrochlore phases. We observed that an accelerated deposition rate promoted mixing of the B-site cation and facilitated relaxation of the compressively strained PMN-PT on the SrTiO

SUBMITTER: Ni S 

PROVIDER: S-EPMC10941063 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature