Electrical Properties of Superlattice-Structured Bi4Ti3O12–PbBi4Ti4O15 Single Crystals |
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| Authors: | M Ikezaki Y Noguchi M Miyayama |
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| Affiliation: | Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa; RCAST, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo |
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| Abstract: | Single crystals of superlattice-structured ferroelectrics composed of Bi4Ti3O12 and PbBi4Ti4O15 were grown and the properties of polarization hysteresis and leakage current along the a -axis were investigated. Oxidation treatment led to a marked increase in leakage current at room temperature, showing that electron hole acts as a detrimental carrier for electrical conduction. A well-developed polarization hysteresis with a remanent polarization of 41 μC/cm2 was observed, which is suggested to originate from the peculiar ferroelectric displacement of Bi in the Bi2O2 layers. |
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