Abstract
Hexagonal YMnO3 has a ferroelectric property with an optimal remanent polarization along the c-axis. The c-axis oriented YMnO3 thin films with a small leakage current were prepared by the sol-gel dipping method. The c-axis orientation of the films was promoted by the addition of diethanolamine to the Mn precursor solution. A heat treatment with multiple steps led to a dense film structure with fine grains. The dense structure resulted in the decrease of the leakage current. Furthermore, when the films were heat-treated in a vacuum, the leakage current became considerably small and the ferroelectricity of the YMnO3 thin films was observed even at room temperature.
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N. Fujimura, T. Ishida, and T. Ito, in Extended Abstracts, The 7th US-Japan Seminar on Dielectric and Piezoelectric Ceramics (1995), p. 109.
N. Fujimura, T. Ishida, T. Yoshimura, and T. Ito, Appl. Phys. Lett. 69(7), 1011 (1996).
T. Yoshimura, N. Fujimura, D. Ito, and T. Ito, Symp. Proc. Mater. Res. Soc., 574, 359 (1999).
N. Fujimura, H. Tanaka, H. Kitahata, K. Tadanaga, T. Yoshimura, T. Ito, and T. Minami, Jpn. J. Appl. Phys. 36, L1601 (1997).
H. Kitahata, K. Tadanaga, T. Minami, N. Fujimura, and T. Ito, J. Am. Ceram. Soc. 81, 1357 (1998).
K. Tadanaga, H. Kitahata, T. Minami, N. Fujimura, and T. Ito, J. Sol-Gel Sci. Tech. 13, 903 (1998).
G. Teowee, K.C. McCarthy, F.S. McCarty, T.J. Bukowski, D.G. Davis Jr., and D.R. Uhlmann, J. Sol-Gel Sci. Tech. 13, 889 (1998).
W. Yi, J. Choe, C. Moon, S. Kwun, and J. Yoon, Appl. Phys. Lett. 73(7), 903 (1998).
H. Kitahata, K. Tadanaga, T. Minami, N. Fujimura, and T. Ito, Appl. Phys. Lett. 75(5), 719 (1999).
K. Kushida, K.R. Udayakumar, S.B. Krupanidhi, and L.E. Cross, J. Am. Ceram. Soc. 76, 1345 (1993).
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Kitahata, H., Tadanaga, K., Minami, T. et al. Preparation and Ferroelectric Properties of YMnO3 Thin Films with c-Axis Preferred Orientation by the Sol-Gel Method. Journal of Sol-Gel Science and Technology 19, 589–593 (2000). https://doi.org/10.1023/A:1008761327562
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DOI: https://doi.org/10.1023/A:1008761327562