对此,本论文将高通量技术应用到无铅压电陶瓷的研究工作中,对BNT-BT-KNN体系的组成-结构-性能关系开展系统研究,实现其性能筛选,并以优选组分为基础进行掺杂改性以实现其低电场驱动器件的需求.本论文的主要研究内容和结果总结如下: (1)无铅压电陶瓷的高通量制备技术及其可行性研究.采用自动化粉体称量,高通量多通道...
(BNT–BT–KNN–xCuO,x=0-0:04 mol.%)ceramics,which were fabricated by the conventional solid-state process through the granulation of vacuum freeze drier.The results show that the CuO doping made a significant enhancement on the piezoelectric properties of the BNT–BT–KNN ceramics.With the ...
The effect of an isovalent chemical variation in A site cations on the stability of ferroelectric order and consequent changes in the electrical properties of ferroelectric 0.93(Bi1/2Na1/2)TiO3-0.05BaTiO3-0.02(K0.5Na0.5)NbO3 (0.93BNT-0.05BT-0.02KNN) lead-free piezoceramic at the morphotropic...
oriented 0.91Bi1/2Na1/2TiO3–0.06BaTiO3–0.03(Na,K)NbO3(BNT–BT–KNN) lead-free piezoceramics were fabricated by templated grain growth method. A high grain orientation degree (Lotgering factor F...doi:10.1007/s10854-015-4132-7Sixiang Ma...
The results show that the CuO doping made a significant enhancement on the piezoelectric properties of the BNT–BT–KNN ceramics. With the doping of CuO, the transition temperature between ferroelectric phase and ergodic relaxor state is reduced to near room temperature, resulting in pinched P–E ...
Ultra-large strain response in BNT-BT-KNN thin films boosted by electric field-induced inversion of long-range ordered polarizationdoi:10.1016/j.jmat.2024.06.005Bismuth sodium titanate (BNT)-based piezoelectric materials are the most promising candidates for lead-free actuator applications. With the ...
Chandrasekhar M, Kumar P (2015) Synthesis and characteriza- tions of BNT-BT and BNT-BT-KNN ceramics for actuator and energy storage applications. Ceram Int 41:5574-5580M. Chandrasekhar, P. Kumar, Synthesis and characterizations of BNT- BT and BNT-BT-KNN ceramics for actuator and energy ...
Evolutions of dielectric, ferroelectric, and piezoelectric properties with temperature in a nonergodic BNT-BT-KNN single crystalBNT-6BT-1KNNSingle crystalsPiezoelectricFlux methodLead-freeIn this study, <001>c-oriented 0.93(Bi0.5Na0.5)TiO3-0.06BaTiO3-0.01(K0.5Na0.5)NbO3(BNT-6BT-1KNN) single ...
Lead Free Piezoceramics. A combined neutron diffraction and TEM-study on the system BNT–BT–KNNLead containing oxides with perovskite structure are widely used as sensors and actuators. Among those materials lead titanate zirconate PbZrTiO(PZT) and lead magnesium niobate-lead titanate, PMN-PT ...
Dittmer R, Jo W, Rodel J, Kalinin S, Balke N. Nanoscale insight into lead-free BNT-BT-xKNN. Adv Funct Mater. 2012;22:4208-4215.Dittmer, R., Jo, W., Rodel, J., Kalinin, S. & Balke, N. Nanoscale Insight Into Lead-Free BNT-BT-xKNN. Adv. Funct. Mater. 22, 4208 (2012)....