Incipient piezoelectrics and electrostriction behavior in Sn-doped Bi1/2(Na0.82K0.18)1/2TiO3 lead-free ceramics | Zendy

HyoungSu Han | Zendy; Wook Jo | Zendy; Jin-Kyu Kang | Zendy; Chang Won Ahn | Zendy; Ill Won Kim | Zendy; Kyoung Kwan Ahn | Zendy; JaeShin Lee | Zendy

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Incipient piezoelectrics and electrostriction behavior in Sn-doped Bi1/2(Na0.82K0.18)1/2TiO3 lead-free ceramics

Author(s) -

HyoungSu Han,

Wook Jo,

Jin-Kyu Kang,

Chang Won Ahn,

Ill Won Kim,

Kyoung Kwan Ahn,

JaeShin Lee

Publication year - 2013

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.4801893

Subject(s) - electrostriction , materials science , piezoelectricity , condensed matter physics , ferroelectricity , doping , electric field , dielectric , ceramic , poling , composite material , optoelectronics , physics , quantum mechanics

Dielectric, ferroelectric, piezoelectric, and strain properties of lead-free Sn-doped Bi-1/2(Na0.82K0.18)(1/2)TiO3 (BNKT) were investigated. A crossover from a nonergodic relaxor to an ergodic relaxor state at room temperature, accompanied by a giant electric-field-induced strain, was observed at 5 at. % Sn doping. Switching dynamics monitored during a bipolar poling cycle manifested that the observed giant strain originates from incipient piezoelectricity. When Sn doping level reached 8 at. %, BNKT exhibited an electrostrictive behavior with a highly temperature-insensitive electrostrictive coefficient of Q(11) = 0.023 m(4)open3

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