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首页> 美国卫生研究院文献>Materials >The Effect of Mixed Doping on the Microstructure and Electrophysical Parameters of the Multicomponent PZT-Type Ceramics
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The Effect of Mixed Doping on the Microstructure and Electrophysical Parameters of the Multicomponent PZT-Type Ceramics

机译：混合掺杂对多组分PZT型陶瓷微结构和电物理参数的影响

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摘要

This work shows the influence of admixture on the basic properties of the multicomponent PbZr Ti O (PZT)-type ceramics. It presents the results of four compositions of PZT-type material with the general chemical formula, Pb ((Zr Ti ) Mn Sb W ) O , where, in the position, a donor admixture was introduced, i.e., samarium (Sm ), gadolinium (Gd ), dysprosium (Dy ) or lanthanum (La ). The compositions of the PZT-type ceramics were obtained through the classic ceramic method, as a result of the synthesis of simple oxides. The X-ray diffraction (XRD) pattern studies showed that the obtained multicomponent PZT materials have a tetragonal structure with a P4mm point group. The microstructure of the obtained compositions is characterized by a well crystallized grain, with clearly visible grain boundaries. The composition with the admixture of lanthanum has the highest uniformity of fine grain microstructure, which positively affects its final dielectric and piezoelectric properties. In the multicomponent PZT-type ceramic, materials utilize the mixed (acceptor and donor) doping of the main compound. This dopiong method has a positive effect on the set of the electrophysical parameters of ceramic materials. Donor dopants W (at positions B) and = Sm , Gd , Dy , and La (at positions A) increase the dielectric and piezoelectric properties, while the acceptor dopant Sb (at positions B) increases the time and temperature stability of the electrophysical parameters. In addition, the suitable selection of the set of admixtures improved the sinterability of the ceramic samples, as well as resulted in obtaining the required material with good piezoelectric parameters for the poling process. This research confirms that all ceramic compositions have a set of parameters suitable for applications in micromechatronics, for example, as actuators, piezoelectric transducers, and precision microswitches.
机译：这项工作表明了掺合料对多组分PbZr Ti O（PZT）型陶瓷基本性能的影响。它给出了四种化学通式为Pb（（Zr Ti）Mn Sb W）O的PZT型材料的结果，在该位置引入了供体混合物，即sa（Sm），g （Gd），（Dy）或镧（La）。通过合成简单的氧化物，通过经典的陶瓷方法获得了PZT型陶瓷的成分。 X射线衍射（XRD）图谱研究表明，所得多组分PZT材料具有带P4mm点基的四方结构。所得组合物的微观结构的特征在于结晶良好的晶粒，具有清晰可见的晶界。掺有镧的组合物具有最高的细晶粒微观结构均匀性，这对其最终的介电和压电性能产生积极影响。在多组分PZT型陶瓷中，材料利用了主要化合物的混合掺杂（受主和施主）。这种多蓬方法对陶瓷材料的电物理参数集具有积极影响。供体掺杂剂W（在位置B）和= Sm，Gd，Dy和La（在位置A）增加介电和压电性能，而受体掺杂剂Sb（在位置B）增加电物理参数的时间和温度稳定性。另外，适当选择这组混合物可以改善陶瓷样品的可烧结性，并获得用于极化过程的具有良好压电参数的所需材料。这项研究证实，所有陶瓷组合物均具有一组适用于微机电一体化的参数，例如作动器，压电换能器和精密微动开关。

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