Fabrication of an antiferroelectric NaNbO3–CaZrO3 film by pulsed laser deposition

Abstract

An antiferroelectric 0.94NaNbO3–0.06CaZrO3 film was fabricated on a SrRuO3/(110)SrTiO3 substrate by pulsed laser deposition. Fourfold superlattice diffraction spots on an X-ray reciprocal space map suggested that the film had antiferroelectric cation ordering. An antiferroelectric double polarization–electric field (P–E) loop was observed for the film, while a ferroelectric P–E loop was observed for a reference NaNbO3 film. These results suggested that an antiferroelectric response was stabilized by partial CaZrO3 substitution in a NaNbO3 film.