通过在 0.48Ba(Zr0.2Ti0.8)O3-0.52(Ba0.7Ca0.3)TiO3 基体材料中添加 ZrO2 提高热稳定性

IF 1.5 4区物理与天体物理 Q3 PHYSICS, APPLIED Japanese Journal of Applied Physics Pub Date : 2024-09-05 DOI:10.35848/1347-4065/ad6c58

Alexander Martin, Naho Kato, Tobias Fey, Kyle G. Webber, Ken-ichi Kakimoto

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引用次数: 0

摘要

基于 x(Ba0.7Ca0.3)TiO3-(1-x)Ba(Zr0.2Ti0.8)O3（BCZT100x）的铁电陶瓷被认为是很有前途的压电应用无铅候选材料。在特定温度下，即多晶相界附近，压电特性会增强。由于某些应用需要更广泛的热稳定性，本研究旨在通过在 BCZT52 基体中引入 ZrO2 作为填充材料来提高相变的扩散性。在 BCZT52 中添加 4 Vol% 的 ZrO2 后，居里点的扩散系数从大约 1.60 增加到 1.88。因此，在 25 °C 至 70 °C 的温度范围内，添加 2 Vol% ZrO2 的样品具有最高的热稳定性。在这里，大信号压电应变系数 d33* 只下降了 18%，而 BCZT52 则下降了 30%。这一增加是由于样品中 Zr 的不均匀分布造成的。

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Increased thermal stability by the addition of ZrO2 into a 0.48Ba(Zr0.2Ti0.8)O3-0.52(Ba0.7Ca0.3)TiO3 matrix material

Ferroelectric ceramics based on x(Ba_0.7Ca_0.3)TiO₃–(1−x)Ba(Zr_0.2Ti_0.8)O₃ (BCZT100x) are regarded as promising lead-free candidates for piezoelectric applications. Heightened piezoelectric properties are found around specific temperatures, i.e. polymorphic phase boundaries. As broader thermal stability is required for certain applications, this study aims to increase the diffusiveness of the phase transitions by introducing ZrO₂ as a filler material into a BCZT52 matrix. The diffuseness factor of the Curie point was evaluated and increased from approximately 1.60 to 1.88 with the addition of 4 vol% ZrO₂ to BCZT52. As a result, samples with an additional 2 vol% showed the highest thermal stability in the temperature range between 25 °C and 70 °C. Here, the large signal piezoelectric strain coefficient

d33*

degraded only by 18%, compared to 30% in BCZT52. This increase was caused by the inhomogeneous distribution of Zr within the sample.

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来源期刊

Japanese Journal of Applied Physics 物理-物理：应用

CiteScore

3.00

自引率

26.70%

发文量

818

审稿时长

3.5 months

期刊介绍： The Japanese Journal of Applied Physics (JJAP) is an international journal for the advancement and dissemination of knowledge in all fields of applied physics. JJAP is a sister journal of the Applied Physics Express (APEX) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP). JJAP publishes articles that significantly contribute to the advancements in the applications of physical principles as well as in the understanding of physics in view of particular applications in mind. Subjects covered by JJAP include the following fields: • Semiconductors, dielectrics, and organic materials • Photonics, quantum electronics, optics, and spectroscopy • Spintronics, superconductivity, and strongly correlated materials • Device physics including quantum information processing • Physics-based circuits and systems • Nanoscale science and technology • Crystal growth, surfaces, interfaces, thin films, and bulk materials • Plasmas, applied atomic and molecular physics, and applied nuclear physics • Device processing, fabrication and measurement technologies, and instrumentation • Cross-disciplinary areas such as bioelectronics/photonics, biosensing, environmental/energy technologies, and MEMS