The pyroelectric properties of Mn-doped Aurivillius ceramics with different pseudo-perovskite layers were investigated. The pyroelectric coefficients for 0.2 wt% Mn-doped two-layer CaBi₂Nb₂O₉ (CBN–Mn), three-layer Bi₄Ti_2.85Nb_0.15O₁₂ (BTN–Mn), and four-layer CaBi₄Ti_3.95Nb_0.05O₁₅ (CBTN–Mn) ferroelectric ceramics were found to be on the order of 26.0, 54.4, 84.4 μC/m²K at room temperature, respectively. These values were closely associated with the number of octahedral layers in the pseudo-perovskite blocks. The high pyroelectric coefficient, together with low dielectric permittivity and loss (tan δ < 0.003), results in to high figures of merit for the current responsivity, voltage responsivity, and detectivity. The excellent pyroelectric properties and high Curie temperatures (T_C > 660°C) make the Aurivillius ceramics potential candidates for pyroelectric devices over a broad temperature range.

中文翻译：

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不同伪钙钛矿层掺锰锰陶瓷的热释电性能

研究了具有不同伪钙钛矿层的Mn掺杂Aurivillius陶瓷的热电性能。掺杂0.2 wt％Mn的两层CaBi ₂ Nb ₂ O ₉（CBN–Mn），三层Bi ₄ Ti _2.85 Nb _0.15 O ₁₂（BTN–Mn）和四层CaBi ₄ Ti _3.95的热电系数发现Nb _0.05 O ₁₅（CBTN-Mn）铁电陶瓷的数量级为26.0、54.4、84.4μC/ m ²在室温下分别为K。这些值与伪钙钛矿块中的八面体层数密切相关。高的热电系数，以及低的介电常数和损耗（tanδ<0.003），导致电流响应率，电压响应率和检测率的高品质因数。优异的热电性能和居里温度高（T _C > 660°C），使得Aurivillius陶瓷在广泛的温度范围内成为热电器件的潜在候选者。