柔性复合材料器件中磁电耦合的应变工程

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-05-06 DOI:10.1063/5.0271826

Guixin He, Yaoxiang Jiang, Tengfei Ma, Jianguo Niu, Yulong Bai, Ning Jiang, Hong Chang, Shifeng Zhao

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引用次数: 0

摘要

本研究探讨了柔性复合薄膜中磁电（ME）特性的应变依赖性调节。采用低能簇束沉积法和湿化学法制备了SmFe2纳米簇圆柱形嵌套在Bi5Ti3FeO15基体上的柔性ME器件。实验结果表明，在不同的弯曲条件下，其性能有明显的变化。应变介导的磁电系数（αE31）在压应力作用下提高了29%。然而，在拉伸状态下，由于抑制应变传递，它略有下降。利用应力工程技术，以应变为关键控制参数，实现了应变介导αE31调控的可调和可预测。此外，柔性ME器件保持了优异的机械稳定性，在10,000次弯曲循环后αE31的变化小于7%。这项工作为柔性电子产品建立了应变介导的ME耦合策略，为可穿戴应用和自适应应变传感器提供了重要见解。

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Strain engineering for magnetoelectric coupling in flexible composite devices

This study explores strain-dependent regulation of magnetoelectric (ME) properties in flexible composite films. A flexible ME device with cylindrical assemblies of SmFe2 nanoclusters embedded in Bi5Ti3FeO15 matrix was prepared by low-energy cluster-beam deposition and wet chemical methods. Experimental results reveal distinct performance variations under different bending conditions. The strain-mediated magnetoelectric coefficient (αE31) exhibits a 29% enhancement under compressive stress due to improved mechanical strain transfer. However, in the tensile state, it marginally decreases due to depressed strain transfer. Using stress engineering, we achieve tunable and predictable strain-mediated αE31 regulation, with strain serving as a key control parameter. Furthermore, the flexible ME device maintains exceptional mechanical stability, with less than 7% variation in αE31 after 10 000 bending cycles. This work establishes a strain-mediated ME coupling strategy for flexible electronics, providing critical insights for wearable applications and adaptive strain sensors.

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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.