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- Jo, Wook
- Sustainable Functional Ceramics Lab.
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Incipient piezoelectrics and electrostriction behavior in Sn-doped Bi-1/2( Na0.82K0.18)(1/2) TiO3 lead-free ceramics
- Author(s)
- Han, Hyoung-Su, Jo, Wook, Kang, Jin-Kyu, Ahn, Chang-Won, Kim, Ill Won, Ahn, Kyoung-Kwan, Lee, Jae-Shin
- Issued Date
- 2013-04
- Citation
- JOURNAL OF APPLIED PHYSICS, v.113, no.15
- Abstract
- 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)
- Publisher
- AMER INST PHYSICS
- ISSN
- 0021-8979
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