Upshift of phase transition temperature in nanostructured PbTiO3 thick film for high temperature applications

Jungho Ryu, Guifang Han, Tae Kwon Song, Aaron Welsh, Susan Trolier-Mckinstry, Hongsoo Choi, Jong Pil Lee, Jong Woo Kim, Woon Ha Yoon, Jong Jin Choi, Dong Soo Park, Cheol Woo Ahn, Shashank Priya, Si Young Choi, Dae Yong Jeong

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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.

Original languageEnglish (US)
Pages (from-to)11980-11987
Number of pages8
JournalACS Applied Materials and Interfaces
Volume6
Issue number15
DOIs
StatePublished - Aug 13 2014

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Ryu, J., Han, G., Song, T. K., Welsh, A., Trolier-Mckinstry, S., Choi, H., Lee, J. P., Kim, J. W., Yoon, W. H., Choi, J. J., Park, D. S., Ahn, C. W., Priya, S., Choi, S. Y., & Jeong, D. Y. (2014). Upshift of phase transition temperature in nanostructured PbTiO3 thick film for high temperature applications. ACS Applied Materials and Interfaces, 6(15), 11980-11987. https://doi.org/10.1021/am5000307