Polarization and piezoelectric properties of grain-oriented ferroelectric Bi5FeTi3O15 ceramics prepared by magnetic-field-assisted electrophoretic deposition method |
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| Authors: | Muneyasu Suzuki Yuji Noguchi Tetsuo Uchikoshi Masaru Miyayama |
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| Affiliation: | (1) Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-Ku, Tokyo 153-8904, Japan;(2) SORST, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi-shi, Saitama 332-0012, Japan;(3) Fine Particle Processing Group, Nano Ceramics Center, National Institute for Materials and Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan |
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| Abstract: | Magnetic-field-assisted electrophoretic deposition method has been employed for synthesizing a(b)-axis-oriented Bi5FeTi3O15 ceramics, and the effects of grain orientation and microstructure on the polarization and piezoelectric properties have been investigated. Grain-oriented Bi5FeTi3O15 ceramics with a high relative sintered density of 98% is shown to exhibit enhanced polarization and piezoelectric properties with a remanent polarization (P r) of 19 μC/cm2 and a piezoelectric strain constant (d 33) of 23 pm/V, which are much superior to those of randomly-oriented ceramics (P r of 7 μC/cm2 and d 33 of 5 pm/V). |
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