• enhanced piezoelectric properties and tunability of lead-free ceramics prepared by high-energy ball milling

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 860
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     zirconium-doped barium titanate ba(zr0.15ti0.85)o3 lead-free ceramics (hereinafter referred to as bzt) were synthesized using the solid-state reaction method by adopting the high-energy ball milling technique. nanosized bzt powders resulted from high-energy ball milling, which in turn enhanced the dielectric and piezoelectric properties of the ceramics. a single-phase perovskite structure free from secondary phase peaks was observed for sintered bzt samples, and a relative density of ∼94% of the theoretical density was achieved. the electric-field-induced polarization-current data indicate the ferroelectric nature of the samples. unipolar strain as high as 0.12% was realized for the ceramics sintered at 1350°c, indicating their potential for use in actuator applications. very high tunability of >70% for these ceramics is also reported.

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