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Structure and phase stability of lead-free antiferroelectric (Na0.96−xCa0.04Lix)(Nb0.96Zr0.04)O3 ceramics
Ist Teil von
Journal of materials science. Materials in electronics, 2019-02, Vol.30 (3), p.2647-2651
Ort / Verlag
New York: Springer US
Erscheinungsjahr
2019
Link zum Volltext
Quelle
SpringerLink
Beschreibungen/Notizen
(Na
0.96−
x
Ca
0.04
Li
x
)(Nb
0.96
Zr
0.04
)O
3
(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.