Temperature stability of multilayer symmetric KNN-based ceramics with continuous phase transitions

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-01-21 DOI:10.1063/5.0247218

Bosen Li, Cheng Xiong, Xuanyang Cao, Xintao Wei, Yan Qiu, Daqiang Gao

引用次数: 0

Abstract

Temperature sensitivity of the lead-free piezoelectric ceramics based on potassium sodium niobate (KNN) has posed a significant challenge for practical applications. In this study, we developed a multi-layer symmetric KNN matrix composite ceramic in a strategy of compositional symmetry to enhance the thermal stability of its piezoelectric properties. The optimized piezoelectric properties of d33 and kp can last up to 121 and 105 °C (setting 10% performance reduction as standard), superior to its single composition sample. Importantly, the compositional symmetry effectively addresses the deformation issue during ceramic sintering. This finding of stability in KNN matrix ceramics will facilitate its industrial-scale production processes.

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连续相变多层对称knn基陶瓷的温度稳定性

铌酸钾钠（KNN）基无铅压电陶瓷的温度敏感性对实际应用提出了重大挑战。在本研究中，我们开发了一种多层对称KNN基复合陶瓷，以提高其压电性能的热稳定性。优化后的d33和kp的压电性能最高可达121℃和105℃（以性能降低10%为标准），优于单一成分样品。重要的是，成分对称有效地解决了陶瓷烧结过程中的变形问题。这一稳定性的发现在KNN基质陶瓷将促进其工业规模的生产过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.