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Large Strain Response and Fatigue‐Resistant Behavior in Ternary Bi 0.5 Na 0.5 TiO 3 –BaTiO 3 –Bi(Zn 0.5 Ti 0.5 )O 3 Solid Solutions
Author(s) -
Li Yan,
Wang Feifei,
Ye Xiang,
Xie Yiqun,
Tang Yanxue,
Sun Dazhi,
Shi Wangzhou,
Zhao Xiangyong,
Luo Haosu
Publication year - 2014
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13176
Subject(s) - materials science , solid solution , ferroelectricity , ternary operation , phase diagram , tetragonal crystal system , phase (matter) , analytical chemistry (journal) , dielectric , atmospheric temperature range , phase transition , piezoelectricity , condensed matter physics , thermodynamics , composite material , metallurgy , optoelectronics , chemistry , physics , organic chemistry , chromatography , computer science , programming language
A ternary solid solution (1 − x )(0.88 Bi 0.5 Na 0.5 TiO 3 –0.12 BaTiO 3 )‐ x Bi ( Zn 0.5 Ti 0.5 ) O 3 ( BNBZT , BNBZT x ) was designed and fabricated using the traditional solid‐state reaction method. The temperature and composition dependence of dielectric, ferroelectric, piezoelectric, and fatigue properties were systematically investigated and a schematic phase diagram was proposed. The substitution with Bi ( Zn 0.5 Ti 0.5 ) O 3 was found to shift the phase transition (ferroelectric tetragonal to relaxor pseudocubic phase) to lower temperatures. At a critical composition x of 0.05, large electric‐field‐induced strain response with normalized strain S max /E max as high as 526 pm/V was obtained under a moderate field of 4 kV/mm around room temperature. The strain exhibited good temperature stability within the temperature range of 25°C–120°C. In addition, excellent fatigue‐resistant behavior was observed in the proposed BNBZT solid solution after 10 6 bipolar cycles. These give the BNBZT system great potential as environmental friendly solid‐state actuator.