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Upshift of Phase Transition Temperature in Nanostructured PbTiO3 Thick Film for High Temperature Applications

Title
Upshift of Phase Transition Temperature in Nanostructured PbTiO3 Thick Film for High Temperature Applications
Authors
Ryu, J[Ryu, Jungho]Han, G[Han, Guifang]Song, TK[Song, Tae Kwon]Welsh, A[Welsh, Aaron]Trolier-McKinstry, S[Trolier-McKinstry, Susan]Choi, H[Choi, Hongsoo]Lee, JP[Lee, Jong-Pil]Kim, JW[Kim, Jong-Woo]Yoon, WH[Yoon, Woon-Ha]Choi, JJ[Choi, Jong-Jin]Park, DS[Park, Dong-Soo]Ahn, CW[Ahn, Cheol-Woo]Priya, S[Priya, Shashank]Choi, SY[Choi, Si-Young]Jeong, DY[Jeong, Dae-Yong]
DGIST Authors
Choi, H[Choi, Hongsoo]
Issue Date
2014-08-13
Citation
ACS Applied Materials and Interfaces, 6(15), 11980-11987
Type
Article
Article Type
Article
Keywords
Aerosol DepositionCalculationsDepositionElectron Energy Loss SpectroscopyFerroelectric CeramicsFerroelectric CharacteristicsFerroelectric FilmsFerroelectric Hysteresis LoopFerroelectric Transition TemperatureFerroelectricityFirst-Principles CalculationHigh TemperatureHigh Temperature ApplicationsPbTiO3PiezoelectricPiezoelectricityRespiratory MechanicsTemperatureThick FilmThick Films
ISSN
1944-8244
Abstract
Thick polycrystalline pure PbTiO3 films with nano size grains were synthesized for the first time by aerosol deposition. Annealed 7 μm thick films exhibit well-saturated ferroelectric hysteresis loops with a remanent polarization and coercive field of 35 μC/cm2 and 94 kV/cm, respectively. A large-signal effective d33,eff value of >60 pm/V is achieved at room temperature. The measured ferroelectric transition temperature (Tc) of the films ∼550 °C is >50 °C higher than the reported values (∼490 °C) for PbTiO3 ceramics. First-principles calculations combined with electron energy loss spectroscopy (EELS) and structural analysis indicate that the film is composed of nano size grains with slightly decreased tetragonality. There is no severe off-stoichiometry, but a high compressive in-plane residual stress was observed in the film along with a high transition temperature and piezoelectric response. The ferroelectric characteristics were sustained until 200 °C, providing significant advancement toward realizing high temperature piezoelectric materials. © 2014 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/1679
DOI
10.1021/am5000307
Publisher
American Chemical Society
Related Researcher
  • Author Choi, Hong Soo Bio-Micro Robotics Lab
  • Research Interests Micro/Nano robot; Neural prostheses; MEMS; BMI; MEMS/NEMS; BioMEMS; MEMS 초음파 트랜스듀스; 인공와우
Files:
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Collection:
Robotics EngineeringETC1. Journal Articles


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