Enhanced piezoresponse and electric field induced relaxor-ferroelectric phase transition in NBT-0.06BT ceramic prepared from hydrothermally synthesized nanoparticles
发布时间：2022-06-09
点击次数：
影响因子：3.83
DOI码：10.1016/j.ceramint.2016.08.208
所属单位：中南大学
发表刊物：Ceramics International
关键字：NBT-0.06BT Piezoelectricity Relaxor Domain structure Hydrothermal synthesis
摘要：0.94Na0.5Bi0.5TiO3-0.06BaTiO3 (NBT-0.06BT) nanoparticles were synthesized by hydrothermal method and subsequently used to prepare NBT-0.06BT ceramics. After poling at the electric field of 3.5 kV/mm, the piezoelectric coefficient (d33) and electromechanical coupling factor (κp) reached 171 pC/N and 0.31, respectively. The NBT-0.06BT ceramics also exhibited a large remanent polarization of 46.10 μC/cm2 and electric field induced strain of 0.243% at 8 kV/mm corresponding to normalized strain d33*=303 pm/V (Smax/Emax). The effects of polarization on crystalline phase, microstructures, dielectric properties and domain structures were investigated to reveal the origin of enhanced piezoresponse and electric field induced strain in as-prepared NBT-0.06BT ceramics. It can be observed that the tetragonal phase in NBT-0.06BT ceramics was enhanced and polar nanoregions were transformed into tweed-like structures and some lamellar domains after E-field poling. The dielectric response of NBT-0.06BT ceramics also exhibited an electric-field-induced relaxor-to-ferroelectric phase transition.
合写作者：C. Jiang
第一作者：X. Zhou
论文类型：期刊论文
学科门类：工学
一级学科：材料科学与工程
文献类型：J
卷号：42
期号：16
页面范围：18631-18640
ISSN号：0272-8842
是否译文：否
发表时间：2016-09-02
收录刊物：SCI