Influence of Nb2O5 doping to energy-storage properties of (Na0.5Bi0.5)0.705Ba0.045Sr0.25TiO3 lead-free ferroelectric ceramics.

Authors :: Wu, Ruifang
Liang, Linlin
Duan, Ruijie
Zhao, Jinghao
Li, Zekai
Bian, Gang
Wang, Jing
Source :: Ferroelectrics; 2021, Vol. 573 Issue 1, p246-255, 10p
Publication Year :: 2021
Abstract: The powder samples of (Na<subscript>0.5</subscript>Bi<subscript>0.5</subscript>)<subscript>0.705</subscript>Ba<subscript>0.045</subscript>Sr<subscript>0.25</subscript>TiO<subscript>3</subscript>-xNb<subscript>2</subscript>O<subscript>5</subscript> (NBBSNT) were synthesized by a wet solid-phase method. The effects of Nb-doping on morphology, ferroelectric and dielectric properties of samples were investigated. Typical surface morphologies by scanning electron microscopy for the NBTBZN ceramics showed grain size decreasing. Dielectric measurements revealed that the depolarization temperature and Curie temperature shifted to lower temperature. With the increase of Nb content, the ferroelectric hysteresis loops became much slimmer, coupled with the reduction in remnant polarization and coercive field. Energy storage density of 0.855 J/cm<superscript>3</superscript> and the energy storage efficiency of 74.26% were obtained for NBBSNT with x = 0.09. [ABSTRACT FROM AUTHOR]

Subjects :: FERROELECTRIC ceramics
LEAD titanate
LEAD-free ceramics
ENERGY storage
DIELECTRIC measurements
CURIE temperature
ENERGY density

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