Open AccessA study on Electrostrictive Properties of Ba2+, Bi3+, Eu3+ Doped PLZT (9/65/35) Transparent Ceramics
Author(s) -
Yijie Chen,
Xia Zeng,
Zhaodong Cao,
Liang Ling,
Ping Qiu,
Xiyun He,
Dazhi Sun
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/678/1/012137
Subject(s) - materials science , electrostriction , dielectric , microstructure , ferroelectricity , coercivity , analytical chemistry (journal) , ceramic , doping , scanning electron microscope , hysteresis , perovskite (structure) , condensed matter physics , mineralogy , piezoelectricity , composite material , crystallography , optoelectronics , chemistry , physics , chromatography
Lead lanthanum zirconate titanate (PLZT 9/65/35) transparent ceramics, which modified with Ba 2+ , Bi 3+ , Eu 3+ respectively, were prepared by hot-press sintering method. The phase structure, microstructure, ferroelectric, dielectric and electrostrictive properties of all the samples were examined and analysed. All of the ceramics show a pure perovskite phase and dense microstructure by the X-ray diffraction (XRD) and scanning electron microscope (SEM). Compared with undoped PLZT ceramics, the peak of the temperature-dependent of the dielectric constant curves with Ba 2+ doped shift slightly to low temperature, meanwhile the Bi 3+ and Eu 3+ peak of the temperature-dependent dielectric constant curves decreases and broadens, which imply the relaxation of the as doped PLZT lattice. The hysteresis loops of Ba 2+ , Bi 3+ , Eu 3+ doped PLZT show that a lower remanent polarization and coercive field. The field-induced strain hysteresis loops of all the sample were measured. The electrostrictive strain and hysteresis of Ba 2+ and Eu 3+ doped PLZT decrease monotonically. However, the electrostrictive strain of Bi3+ doped PLZT is increased. The experimental result implies that the A-site vacancies are induced by Ba 2+ , Bi 3+ and Eu 3+ , which is in accordance with previous investigations. The strain curves of transparent materials exhibit low hysteresis under DC electric fields and this effect can be used in relative applications for great potential.