Remarkably high-temperature stable piezoelectric properties of Bi(Mg0.5Ti0.5)O3 modified BiFeO3-BaTiO3 ceramics

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ZHOU, Changrong, FETEIRA, Antonio, SHAN, Xu, YANG, Huabin, ZHOU, Qin, CHENG, Jun, LI, Weizhou and WANG, Hua (2012). Remarkably high-temperature stable piezoelectric properties of Bi(Mg0.5Ti0.5)O3 modified BiFeO3-BaTiO3 ceramics. Applied Physics Letters, 101 (3), 032901. [Article]

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Abstract

Dense (1-x)BiFe1-x(Mg0.5Ti0.5)xO3–yBaTiO3 (BFMT-BT, y=0.29, x=0-0.12) ceramics with a pseudocubic perovskite crystal structure exhibit remarkably high-temperature stable piezoelectric properties. In particular, x=0.03 BFMT-BT ceramics, with a Curie temperature, Tc, of ~425C, show a stable piezoelectric coefficient, d33, of ~155 pC/N up to a depolarization temperature, Td, of ~400C. This Td is higher than Tc for Pb(Zr,Ti)O3, therefore suggesting BFMT-BT ceramics to be promising high-temperature Pb-free piezoelectric materials.

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Research Institute, Centre or Group - Does NOT include content added after October 2018:

Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Corrosion Technology

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032901

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Identification Number:

10.1063/1.4736724

ORCID for Antonio Feteira: