Preparation of SBN Thin Films by the Organic Gel Method and the Electrical Properties

Abstract

Abstract: Sr_0.5Ba_0.5Nb₂O₆ (SBN50) thin films were prepared by the organic gel method. The microstructural variation of the gel powders and SBN thin films with annealing temperature was
studied by differential thermal analysis (DTA), thermogravimetry (TG), Fourier transform infrared (FT-IR) and X-ray diffraction (XRD). The differences in the decomposition between Sr-Ba-Nb nitrate precursor
solutions with different pH values were investigated. By annealing at 700℃ for 2h, polycrystalline SBN thin films with smooth and crack-free surface were derived from the precursor solution with
pH=8. Electric properties measurement indicated that the SBN films demonstrated a ferroelectric hysteresis loop. The remanent polarization(P_r) and coercive field (E_c) were 8.17μC/cm²
and 16.9kV/cm, respectively.

Key words: Sr_0.5Ba_0.5Nb₂O₆ thin films, organic gel method, electrical properties

CLC Number:

TB43

ZHAO Jiu-Peng,QIANG Liang-Sheng,ZHANG Lei. Preparation of SBN Thin Films by the Organic Gel Method and the Electrical Properties[J]. Journal of Inorganic Materials.

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Preparation of SBN Thin Films by the Organic Gel Method and the Electrical Properties

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