Modified process engineering at morphotropic phase boundary for enhanced grain size and piezoelectric response in lead free BZT-BCT

IF 2.8 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Materials Science: Materials in Electronics Pub Date : 2024-10-26 DOI:10.1007/s10854-024-13735-6

Rajat Syal, Priyanka Sharma, Rahul Goel, Arun Kumar Singh, O. P. Thakur, K. K. Sharma, Sanjeev Kumar

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引用次数: 0

Abstract

We perform systematic investigation on (1-x)Ba(Zr_0.20Ti_0.80)O₃-x(Ba_0.70Ca_0.30)TiO₃ ceramics prepared by solid state reaction technique. We thoroughly investigate the effect of synthesis procedure on crystal structure, microstructure, dielectric, ferroelectric, and piezoelectric properties. Room temperature X-Ray diffraction (XRD) patterns reveal that the as synthesized samples crystallize with desired perovskite phase. Scanning electron microscopy depicts that the grain size shows significant enhancement in size. Large grains having size ~ 36 μm were observed in 50(BZT-BCT) composition prepared using modified synthesis route. Dielectric analysis depicts that the Curie temperature ‘T_c’ and diffusive coefficient ‘γ’ are considerably affected by the synthesis process. Ferroelectric studies show the well saturated loops at 30 kV/cm, and observed maximum values of remnant polarization (P_r), saturation polarization (P_s) and low values of coercive field (E_c) ~ 12.39 μC/cm², 22.67 μC/cm² and 3.05 kV/cm, respectively for 50(BZT-BCT) composition. Excellent piezoelectric properties (d₃₃ ~ 520 pC/N and k_p ~ 57.5%) were observed in 50(BZT-BCT) ceramic. The present manuscript highlights the various parameters affected the synthesis process. The results show that the modified synthesis route enhanced the properties of the ceramic and are promising candidates for lead-free piezoelectric applications.

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在各向异性相界处改进工艺工程，以增强无铅 BZT-BCT 的晶粒尺寸和压电响应

我们对固态反应技术制备的 (1-x)Ba(Zr0.20Ti0.80)O3-x(Ba0.70Ca0.30)TiO3 陶瓷进行了系统研究。我们深入研究了合成过程对晶体结构、微观结构、介电、铁电和压电特性的影响。室温 X 射线衍射（XRD）图显示，合成的样品结晶出所需的包晶相。扫描电子显微镜显示，晶粒尺寸明显增大。在使用改良合成路线制备的 50（BZT-BCT）成分中，观察到尺寸为 36 μm 的大晶粒。介电分析表明，居里温度 "Tc "和扩散系数 "γ "受到合成工艺的很大影响。铁电研究显示，50(BZT-BCT) 成分在 30 kV/cm 时具有良好的饱和回路，并观察到最大残余极化值（Pr）、饱和极化值（Ps）和较低的矫顽力场值（Ec），分别为 12.39 μC/cm2、22.67 μC/cm2 和 3.05 kV/cm。50(BZT-BCT) 陶瓷具有优异的压电特性（d33 ~ 520 pC/N 和 kp ~ 57.5%）。本手稿重点介绍了影响合成过程的各种参数。结果表明，改进的合成路线提高了陶瓷的性能，有望用于无铅压电应用。

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来源期刊

Journal of Materials Science: Materials in Electronics 工程技术-材料科学：综合

CiteScore

5.00

自引率

7.10%

发文量

1931

审稿时长

2 months

期刊介绍： The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.