Abstract
We report on structural, electrical, and Raman investigations of phase changes induced in P(VDF-TrFE) films by electron beam irradiation. With increasing electron beam dose, the ferroelectric β-phase is weakened because of reductions in the coercive field, remnant polarization, and Curie temperature. Finally, highly dosed (9.38 × 1016 cm−2) P(VDF-TrFE) shows a paraelectric α-phase. A Vogel-Folcher type relaxor behavior becomes strong with the decreasing freezing temperature and the increasing activation energy. From the Raman scattering measurement, we observed that both the α- and the β-phases coexist irrespective of the electron beam irradiation and that the temperature dependences of the α- and β-phases are quite different. The ratio of the intensity of the α-phase to that of the β-phase sharply increases at a certain temperature, at which polar nanoregions may disappear.
References
M. Li, H. J. Wondergem, M. J. Spijkman, K. Asadi, I. Katsouras, P. W. M. Blom, and D. M. de Leeuw, Nat. Mater. 12, 433 (2013).
B. B. Tian et al., Nat. Commun. 7, 11502 (2016).
B. Jaffe, W. Cook, and H. Jaffe, Piezoelectric Ceramics (Academic Press, London, 1971).
Z. Hu, M. Tian, B. Nysten, and A. M. Jonas, Nat. Mater. 8, 62 (2009).
Z. Y. Cheng, V. Bharti, T. B. Xu, H. Xu, T. Mai, and Q. M. Zhang, Sens. Actuators A 90, 138 (2001).
J. H. Lee et al., Adv. Mater. 26, 765 (2014).
H. M. Bao, J. F. Song, J. Zhang, Q. D. Shen, C. Z. Yang, and Q. M. Zhang, Macromolecules 40, 2371 (2007).
A. J. Lovinger, Macromolecules 18, 910 (1985).
H. J. Lee, J. Kim, O. Kwon, H. J. Lee, J. H. Kwak, J. M. Kim, S. S. Lee, Y. Kim, D. Y. Kim, and J. Y. Jo, Appl. Phys. Lett. 107, 262902 (2015).
Y. Tang, D. Wang, S. Guo, X. Z. Zhao, Eur. Polym. J. 37, 471 (2001).
Q. M. Zhang, V. Bharti, and X. Zhao, Science 280, 2101 (1998).
Q. M. Zhang, H. F. Li, M. Poh, F. Xia, Z. Y. Cheng, H. Xu, and C. Huang, Nature 419, 284 (2002).
P. Mabboux and K. Gleason, J. Fluorine Chem. 113, 27 (2002).
V. Bharti, H. Xu, G. Shanthi, Q. M. Zhang, and K. Liang, J. Appl. Phys. 87, 452 (2000).
E. Bellet-Amalric and J. F. Legrand, Eur. Phys. J. B 3, 225 (1998).
N. M. Reynolds, K. J. Kim, C. Chang, and S. L. Hsu, Macromolecules 22, 1092 (1989).
K. Kimura, K. Kobayashi, H. Yamada, T. Horiuchi, K. Ishida, and K. Matsushige, Appl. Surf. Sci. 252, 5489 (2006).
H. Vogel, Z. Phys. 22, 645 (1921).
S. Fulcher, J. Am. Ceram. Soc. 8, 339 (1925).
K. Tashiro and M. Kobayashi, Polymer 29, 426 (1988).
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Kim, J.W., Lee, T.K., Jung, J.H. et al. Coexisting ferroelectric and paraelectric phases in electron beam irradiated P(VDF-TrFE) films. Journal of the Korean Physical Society 69, 1724–1728 (2016). https://doi.org/10.3938/jkps.69.1724
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DOI: https://doi.org/10.3938/jkps.69.1724