Investigation on microscopic mechanisms of high-Curie temperature PMN-PH-PT piezoelectric ceramics

IF 1.3 4区 物理与天体物理 Q4 PHYSICS, CONDENSED MATTER Ferroelectrics Letters Section Pub Date : 2021-11-01 DOI:10.1080/07315171.2021.1971008
Rongfeng Zhu, B. Fang, Xiang-juan Zhao, Shuai Zhang, Xiaolong Lu, Jianning Ding
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引用次数: 1

Abstract

Abstract High-Curie temperature (TC) piezoelectric ceramics 0.15Pb(Mg1/3Nb2/3)O3-0.38PbHfO3-0.47PbTiO3 (0.15PMN-0.38PH-0.47PT) were fabricated via the citrate method, which shows pure perovskite structure. The ceramics have composition locating at the rhombohedral side around the morphotropic phase boundary (MPB), and present enhanced electrical properties as compared with those prepared by the solid-state reaction method via the columbite precursor technique. Temperature-dependent Raman spectroscopy not only proves the occurrence of the ferroelectric to paraelectric phase transition around TC, but also detects the successive phase symmetry transitions, which correlate with the polar nanoregions (PNRs) or the coexistence of multiple ferroelectric phases. Large quantities of fine stripe nanoscale ferroelectric domains are observed by piezoresponse force microscopy (PFM) in the 0.15PMN-0.38PH-0.47PT ceramics, which form the larger micron island domains. Temperature-dependent Raman spectra and PFM results indicate that the excellent dielectric, ferroelectric and piezoelectric properties of the 0.15PMN-0.38PH-0.47PT ceramics can be attributed to either the existence of the PNRs with low symmetry or the multiple-ferroelectric-phases coexistence around room temperature and the fine stripe ferroelectric domains.
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高居里温度PMN-PH-PT压电陶瓷微观机理研究
采用柠檬酸盐法制备了具有纯钙钛矿结构的高居里温度压电陶瓷0.15Pb(Mg1/3Nb2/3) o3 -0.38 phbhfo3 -0.47 pbtio3 (0.15PMN-0.38PH-0.47PT)。该陶瓷的成分位于偏向形态相边界(MPB)周围的菱形面侧,与采用柱状前驱体技术的固相反应法制备的陶瓷相比,其电学性能有所提高。温度相关拉曼光谱不仅证明了TC周围铁电相向准电相转变的发生,而且还检测到与极性纳米区(PNRs)或多个铁电相共存相关的连续相对称转变。利用压电响应力显微镜(PFM)在0.15PMN-0.38PH-0.47PT陶瓷中观察到大量细条纹纳米铁电畴,形成较大的微米岛状畴。温度相关的拉曼光谱和PFM结果表明,0.15PMN-0.38PH-0.47PT陶瓷优异的介电、铁电和压电性能可归因于低对称性pnr的存在或室温和细条纹铁电畴周围的多铁电相共存。
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来源期刊
Ferroelectrics Letters Section
Ferroelectrics Letters Section 物理-物理:凝聚态物理
CiteScore
1.10
自引率
0.00%
发文量
1
审稿时长
4.8 months
期刊介绍: Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.
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