The Effect of Rare-Earth Dopants on Dielectric Behavior and Energy Storage Performances of NBST-Based Relaxor Ferroelectric Ceramics
Year: 2025
Type: article
Abstract: In this study, Na0.3Bi0.38Sr0.28TiO3–2 wt% Re2O3 (abbreviated as NBST–Re; Re = La, Nd, Sm, Dy, Er, and Yb) ceramics were prepared by the conventional solid-state reaction method. The effect of different rare-earth dopants on the phase structure, microstructure, dielectric behavior, and energy storage performance (ESP) of NBST-Re ceramics was investigated. All the prepared ceramics exhibit dense microstructure and perovskite structure with the coexistence of rhombohedral (R3c) and tetragonal (P4bm) phases. The temperature-dependent dielectric constant and dielectric loss curves prove obvious relaxation behavior induced by rare-earth dopants. Notably, the best ESPs were realized in NBST–Yb ceramic with a recoverable energy density of 2.10 J/cm3 and the corresponding efficiency of 70.45% at 200 kV/cm. Furthermore, excellent frequency and temperature stabilities support the prospect of NBST-Yb ceramic in energy storage.
Source: Materials science forum
DOI: 10.4028/p-1grkf5
Authors: Xiang Jun Meng, Ying Yuan
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4408844581