Phase transition, large strain and energy storage in ferroelectric (Bi0.5Na0.5)TiO3-BaTiO3 ceramics tailored by (Mg1/3Nb2/3)(4 ) complex ions
Phase transition, large strain and energy storage in ferroelectric (Bi0.5Na0.5)TiO3-BaTiO3 ceramics tailored by (Mg1/3Nb2/3)(4 ) complex ions
复制标题
(Mg1/3Nb2/3)(4)络离子定制铁电(Bi0.5Na0.5)TiO3-BaTiO3陶瓷的相变、大应变和储能
DOI：
10.1007/s11664-019-07770-x
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发表时间：
2020
影响因子：
2.1
通讯作者：
Hua Wang
中科院分区：
文献类型：
--
作者：
Yabin Sun;Yangyang Zhao;Jiwen Xu;Ling Yang;Changrong Zhou;Guanghui Rao;Hua Wang
Lead-free relaxor-ferroelectric (Mg1/3Nb2/3)4+complex ions modified (Bi0.5Na0.5)0.94Ba0.06TiO3(BNBT-xMN) ceramics were fabricated by traditional solid-phase reaction sintering, and the effects of (Mg1/3Nb2/3)4+complex ions on the structural, ferroelectric, dielectric, energy storage, and strain properties of these ceramics were studied. All of the samples illustrated a single perovskite phase with a pseudo-cubic structure. Electric field-induced polarization and strain hysteresis loops indicated the occurrence of reversible ferroelectric-to-relaxor phase transition, which gave rise to a large strain of 0.49%. (Mg1/3Nb2/3)4+complex ions greatly influenced the coercive field and remanent polarization of the ceramics; these properties also affected energy storage density of the materials. The optimal energy storage density and efficiency of the ceramics were 0.54 J/cm3and 38.4%, respectively, whenx= 0.04. These results may stem from the electric field-induced transition between the ferroelectric and relaxor-ferroelectric phase of the proposed ceramics.
