Structural, thermal and dielectric properties of Pb(Mg1/3Nb2/3)1‑x TixO3 ceramics at morphotropic phase boundary

IF 0.9 4区物理与天体物理 Q4 PHYSICS, APPLIED

European Physical Journal-applied Physics Pub Date : 2020-10-01 DOI:10.1051/epjap/2020200171

A. Alaoui-Belghiti, Y. Tabbai, M. Rkhis, S. Laasri, H. Lifi, A. Laghzizil, K. Strzałkowski, A. Hajjaji

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引用次数: 6

Abstract

Ceramics arising from Pb(Mg1/3 Nb2/3 )1‑x Tix O3 with composition near the morphotropic phase boundary (MPB) were prepared by the modified solid-state reaction method. The synthesized ceramics were characterized, and then the operating principles of pyroelectric and piezoelectric harvesters are reviewed. In addition, the dielectric behavior is measured to determine the dielectric constant and losses at different temperatures and frequencies. The typical behavior of a ferroelectric relaxer was observed by adding the PbTiO3 phase. The thermal properties are also analyzed by PPE calorimetry, presaging a one-dimensional heat-flow process. As a result, the dielectric and thermal behaviors of the as-prepared ceramics as well as their thermal stability are intimately linked to the PbTiO3 addition to PbMgl/3 Nb2/3 O3 phase. These materials exhibit good physical performances, which makes them promising candidates for pyroelectric micro-generators (PEG), cooling systems and infrared applications.

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Pb(Mg1/3Nb2/3)1‑x TixO3陶瓷在致晶相界面上的结构、热性能和介电性能

采用改进的固相反应法制备了Pb(Mg1/3 / Nb2/3)1‑x Tix O3靠近致形相边界(MPB)的陶瓷。对合成的陶瓷进行了表征，并对热释电和压电采集器的工作原理进行了综述。此外，还测量了介电性能，以确定在不同温度和频率下的介电常数和损耗。通过添加PbTiO3相观察到铁电弛豫剂的典型行为。用PPE量热法分析了材料的热性能，预测了材料的一维热流过程。结果表明，制备的陶瓷的介电和热行为及其热稳定性与pbgl /3 Nb2/3 O3相中PbTiO3的加入密切相关。这些材料表现出良好的物理性能，这使它们成为热释电微型发电机(PEG)、冷却系统和红外应用的有希望的候选者。

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来源期刊

European Physical Journal-applied Physics 物理-物理：应用

CiteScore

1.90

自引率

10.00%

发文量

审稿时长

1.9 months

期刊介绍： EPJ AP an international journal devoted to the promotion of the recent progresses in all fields of applied physics. The articles published in EPJ AP span the whole spectrum of applied physics research.