Reversible electric-field-induced phase transition in Ca-modified NaNbO₃ perovskites for energy storage applications.

ABSTRACT: Sodium niobate (NaNbO₃) is a potential material for lead-free dielectric ceramic capacitors for energy storage applications because of its antipolar ordering. In principle, a reversible phase transition between antiferroelectric (AFE) and ferroelectric (FE) phases can be induced by an application of electric field (E) and provides a large recoverable energy density. However, an irreversible phase transition from the AFE to the FE phase usually takes place and an AFE-derived polarization feature, a double polarization (P)-E hysteresis loop, does not appear. In this study, we investigate the impact of chemically induced hydrostatic pressure (p_chem) on the phase stability and polarization characteristics of NaNbO₃-based ceramics. We reveal that the cell volume

SUBMITTER: Aso S 

PROVIDER: S-EPMC10130038 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature