(1-x)BZT-(x)BCT 陶瓷在相收敛区附近的成分驱动相共存和功能特性

IF 0.7 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
J. Tangsritrakul, Chumpon Wichittanakom, C. Saiyasombat
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引用次数: 0

摘要

锆钛酸铅(PZT)在各向同性相界(MPB)上的成分诱导相变概念已被用于改善 (1-x)BZT-(x)BCT 陶瓷的功能特性。然而,研究发现,(1-x)BZT-(x)BCT 陶瓷的相图与 PZT 不同。因此,(1-x)BZT-(x)BCT 陶瓷与 PZT 不同,其卓越功能特性的本质至今仍不清楚。在这项研究中,利用同步辐射 X 射线粉末衍射(SXPD)鉴定相共存的方法,对比评估了 x = 0.3 mol% 至 0.6 mol% 的 (1-x)BZT-(x)BCT 陶瓷在室温下的功能特性;介电特性、铁电特性、储能特性和压电特性。研究发现,BCT 含量的变化对观察到的共存相和功能特性有很大影响。此外,显示出最高压电特性的成分并没有呈现出最大的饱和极化。这意味着,(1-x)BZT-(x)BCT 陶瓷的功能特性并不依赖于电场作用下极化的存在。非 180°畴切换也发挥了重要作用,尤其是在压电特性方面。这些发现将有助于扩展我们对 (1-x)BZT-(x)BCT 陶瓷性质的认识。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Composition-driven phase coexistence and functional properties of the (1-x)BZT-(x)BCT ceramics near the phase convergence region
The concept of composition-induced phase transformation in Lead Zirconate Titanate (PZT) at the Morphotropic Phase Boundary (MPB) has been employed to improve functional properties of the (1-x)BZT-(x)BCT ceramic. However, it was observed that the phase diagram of the (1-x)BZT-(x)BCT ceramic is different to the PZT. As a result, the nature of the superior functional properties found in (1-x)BZT-(x)BCT ceramic is unlike PZT and still unclear so far. In this work, functional properties; dielectric, ferroelectric, energy storage, and piezoelectric properties, of the (1-x)BZT-(x)BCT ceramics where x = 0.3 mol% to 0.6 mol% were evaluated at room temperature in comparison to the identification of phase coexistence using synchrotron x-ray powder diffraction (SXPD). This work found that changes of BCT content had a strong impact on the observed coexisting phases and functional properties. Moreover, the composition that showed the highest piezoelectric properties did not present the largest of saturation polarization. This implies that the functional properties of the (1-x)BZT-(x)BCT ceramics are not dependent on the presence of polarizations under the application of electric field. The contribution of non-180° domain switching also plays a vital role, especially in the piezoelectric properties. These findings would help to extend our knowledge of the nature of the (1-x)BZT-(x)BCT ceramic.  
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来源期刊
Journal of metals, materials and minerals
Journal of metals, materials and minerals MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
1.40
自引率
11.10%
发文量
0
期刊介绍: Journal of Metals, Materials and Minerals (JMMM) is a double-blind peer-reviewed international journal published 4 issues per year (starting from 2019), in March, June, September, and December, aims at disseminating advanced knowledge in the fields to academia, professionals and industrialists. JMMM publishes original research articles as well as review articles related to research and development in science, technology and engineering of metals, materials and minerals, including composite & hybrid materials, concrete and cement-based systems, ceramics, glass, refractory, semiconductors, polymeric & polymer-based materials, conventional & technical textiles, nanomaterials, thin films, biomaterials, and functional materials.
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