Results
Title

Structure and phase stability of lead-free antiferroelectric (Na<sub>0.96−x</sub>Ca<sub>0.04</sub>Li<sub>x</sub>)(Nb<sub>0.96</sub>Zr<sub>0.04</sub>)O<sub>3</sub> ceramics.

Authors

Xu, Zunping; Qiang, Hua; Chen, Yi; Liu, Gang

Abstract

(Na0.96−xCa0.04Lix)(Nb0.96Zr0.04)O3 (CZNNL) ceramics with high density were successfully prepared by the solid-state reaction method. The effect of Li dopants on the structure, electrical properties and stability of antiferroelectricity has been investigated. Enhanced antiferroelectric superlattice peaks was observed for CZNNL (x ≤ 0.01) using X-ray diffraction. Li substitution can effectively destabilize the antiferroelectric phase and correspondingly the ferroelectric phase can be enhanced. The field-induced polarization increase and the average grain size decrease with increasing Li concentration. The CZNNL (x = 0.01) ceramics can preserve the double polarization hysteresis loops at room temperature and at 120 °C.

Subjects

DOPING agents (Chemistry); SINTERING; CERAMICS; ANTIFERROELECTRICITY; PHASE transitions

Publication

Journal of Materials Science: Materials in Electronics, 2019, Vol 30, Issue 3, p2647

ISSN

0957-4522

Publication type

Academic Journal

DOI

10.1007/s10854-018-0540-9