Effect of Zinc Substitution on Structural, Dielectric, and Electrical Characteristics of Pb(Zr0.48Ti0.52)O3 Ceramics,Physica Status Solidi (B) - Basic Solid State Physics

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Effect of Zinc Substitution on Structural, Dielectric, and Electrical Characteristics of Pb(Zr0.48Ti0.52)O3 Ceramics
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.5 ) Pub Date : 2021-06-01 , DOI: 10.1002/pssb.202100102
Krishna Auromun ₁ , Ipsita Panda ₁ , Sagarika Das ₁ , Rashmi Rekha Sahoo ₁ , R N P Choudhary ₁

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Herein, the synthesis and characterization of zinc (Zn)-modified lead zirconate titanate (PZT) at the morphotropic phase boundary (Zr/Ti = 48/52) (i.e., Pb_1−xZn_xZr_0.48Ti_0.52O₃ [x = 0.0, 0.03, 0.06, and 0.09]) are reported. The materials are synthesized using a high-temperature solid-state reaction route. Room temperature X-ray structural (Rietveld) analysis confirms the formation of single-phase compounds in tetragonal symmetry. The detailed dielectric studies exhibit that the Curie temperature of the modified PZT is 451, 444, 443, and 442 °C for x = 0.0 (PZT-1), 0.03 (PZT-2), 0.06 (PZT-3), and 0.09 (PZT-4), respectively. The existence of ferroelectric property in the compounds is confirmed through the room temperature electric-field-dependent polarization hysteresis loops. It is found that PZT-1 has the highest dielectric constant ≈4327 (at 1 kHz) at T _C as compared with that of other compositions. The frequency–temperature-dependent dielectric and electrical properties demonstrate the contribution of zinc in the conduction mechanism. The observation of grain and grain boundary contributions to the charge carriers, the negative and positive temperature coefficient of resistance (NTCR and PTCR) nature across T _C, a controlled (lower) leakage current (≈10⁻¹¹ to ≈10⁻¹³), and the piezoelectric property make the materials useful for several applications.

中文翻译：

锌取代对 Pb(Zr0.48Ti0.52)O3 陶瓷结构、介电和电学特性的影响

在此，锌 (Zn) 改性锆钛酸铅 (PZT) 在同形相界 (Zr/Ti = 48/52) 的合成和表征（即 Pb _{1− x} Zn _x Zr _0.48 Ti _0.52 O ₃ [ x = 0.0、0.03、0.06 和 0.09]）。这些材料是使用高温固相反应路线合成的。室温 X 射线结构 (Rietveld) 分析证实了四方对称单相化合物的形成。详细的介电研究表明，对于x，改性 PZT 的居里温度为 451、444、443 和 442 = 0.0 (PZT-1)、0.03 (PZT-2)、0.06 (PZT-3) 和 0.09 (PZT-4)。通过室温依赖电场的极化磁滞回线证实了化合物中铁电性的存在。发现与其他组合物相比，PZT-1 在T _{C 下}具有最高的介电常数≈4327（在 1 kHz 时）。频率-温度相关的介电和电特性证明了锌在传导机制中的贡献。观察晶粒和晶界对电荷载流子的贡献，T _{C 上}的负和正电阻温度系数（NTCR 和 PTCR）性质，受控（较低）漏电流（≈10 ^-11至 ≈10^-13 ) 和压电特性使材料可用于多种应用。

更新日期：2021-06-01

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