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High‐Performance [001]c‐Textured PNN‐PZT Relaxor Ferroelectric Ceramics for Electromechanical Coupling Devices
Author(s) -
Bian Lang,
Qi Xudong,
Li Kai,
Yu Yang,
Liu Linjing,
Chang Yunfei,
Cao Wenwu,
Dong Shuxiang
Publication year - 2020
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202001846
Subject(s) - materials science , piezoelectricity , ceramic , microstructure , texture (cosmology) , ferroelectricity , figure of merit , dielectric , composite material , coupling (piping) , optoelectronics , image (mathematics) , artificial intelligence , computer science
[001] C ‐Textured 0.55Pb(Ni 1/3 Nb 2/3 )O 3 –0.15PbZrO 3 –0.3PbTiO 3 (PNN‐PZT) ceramics are prepared by the templated grain‐growth method using BaTiO 3 (BT) platelet templates. Samples with different template contents are fabricated and compared in terms of texture fraction, microstructure, and piezoelectric, ferroelectric and dielectric properties. High piezoelectric performance ( d 33 = 1210 pC N −1 , d 33 * = 1773 pm V −1 at 5 kV cm −1 ) and high figure of merit g 33 ⋅ d 33 (21.92 × 10 −12 m 2 N −1 ) are achieved in the [001] C ‐textured PNN‐PZT ceramic with 2 vol% BaTiO 3 template, for which the texture fraction is 82%. In addition, domain structures of textured PNN‐PZT ceramics are observed and analyzed, which provide clues to the origin of the giant piezoelectric and electromechanical coupling properties of PNN‐PZT ceramics.