Abstract Lead free piezoelectric ceramic 0.5(Ba0.7Ca0.3)TiO3−0.5Ba(Ti0.9Zr0.1)O3, which reveals a high piezoelectric coefficient was synthesized using two different precursors. The sample synthesized separately using ZrO2 and BaZrO3 as Zr-ion dopant precursor exhibits remarkable difference in characteristics. The dielectric studies revealed a clear ferroelectric transition at 95 °C for both the samples along with the expected tetragonal to orthorhombic and orthorhombic to rhombohedral transitions. The sample fabricated using BaZrO3 as precursor has lesser amount of secondary phases, and exhibits high density, large d33 (410 pC/N), and high remnant polarization (9.2 μC/cm2) which are suitable parameters for piezomechanical applications. On the other hand, the sample synthesized with ZrO2 as precursor yields the characteristic parameters suitable for energy storage applications such as large maximum polarization (17 μC/cm2), low remnant polarization (4.1 µC/cm2), large recoverable energy density (W = 164 mJ/cm3) with high percentage efficiency (74%). The studies illustrate the way of changing the physical properties of the piezoceramics towards selected applications by the choice of precursors.

中文翻译：

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前驱体对0.5BCT-0.5BZT陶瓷压电和铁电特性的影响

摘要 无铅压电陶瓷 0.5(Ba0.7Ca0.3)TiO3−0.5Ba(Ti0.9Zr0.1)O3 是使用两种不同的前驱体合成的，具有高压电系数。分别使用 ZrO2 和 BaZrO3 作为 Zr 离子掺杂剂前体合成的样品在特性上表现出显着差异。介电研究揭示了两种样品在 95°C 下的明显铁电转变以及预期的四方到正交和正交到菱面体的转变。使用 BaZrO3 作为前驱体制造的样品具有较少的二次相，并表现出高密度、大 d33 (410 pC/N) 和高残余极化 (9.2 μC/cm2)，这些都是适合压电机械应用的参数。另一方面，以 ZrO2 作为前驱体合成的样品产生了适用于储能应用的特征参数，例如大的最大极化 (17 μC/cm2)、低剩余极化 (4.1 μC/cm2)、大的可恢复能量密度 (W = 164 mJ/cm3)具有高百分比效率 (74%)。这些研究说明了通过选择前体来改变压电陶瓷的物理特性以适应特定应用的方式。