Lead-free Bi(Mg0.5Ti0.5)O3-modified 0.875Bi0.5Na0.5TiO3-0.125BaTiO3 ferroelectric ceramics with tetragonal structure and large field-induced strains | Zendy

Ling Li | Zendy; Mankang Zhu | Zendy; Xiaowei Ren | Zendy; Qiumei Wei | Zendy; Mupeng Zheng | Zendy; Yudong Hou | Zendy

Open Access

Lead-free Bi(Mg_0.5Ti_0.5)O₃-modified 0.875Bi_0.5Na_0.5TiO₃-0.125BaTiO₃ ferroelectric ceramics with tetragonal structure and large field-induced strains

Author(s) -

Ling Li,

Mankang Zhu,

Xiaowei Ren,

Qiumei Wei,

Mupeng Zheng,

Yudong Hou

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4990771

Subject(s) - tetragonal crystal system , electrostriction , materials science , sintering , ceramic , ferroelectric ceramics , ferroelectricity , solid solution , titanate , relative density , composite material , crystal structure , crystallography , piezoelectricity , dielectric , metallurgy , optoelectronics , chemistry

A electrostrictive ceramics were designed by introducing Bi(Mg0.5Ti0.5)O3 into 0.875Bi0.5Na0.5TiO3-0.125BaTiO3 with tetragonal structure. All the specimens prepared by a conventional solid sintering technique exhibit the excellent sintering ability with a high relative density over 97%. It is found that, as BMT added, the specimens undergo a structure crossover from ferroelectric P4mm to ergodic P4bm, and the coexistence of both tetragonal structures takes bridge between them. A large field-induced strain of 0.30% and field-independent strain coefficient of 0.0254 m4/C2 occur at 4 mol.% BMT added. This material with excellent sinterability is suitable for the application in actuators and microposition controllers

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