Biaxially Stretchable Spin Valves With Stable Magnetic Sensing Performance

IF 1.1 4区物理与天体物理 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Magnetics Letters Pub Date : 2024-10-17 DOI:10.1109/LMAG.2024.3483069

Mengting Zou;Xilai Bao;Xinze Li;Yali Xie;Huali Yang;Lili Pan;Xiaojian Zhu;Run-Wei Li

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Abstract

Spin valves have received significant attention in the realm of flexible magnetic materials and devices due to their advantages of rapid response and high integration. Despite these benefits, the practical application of spin valves in wearable devices is constrained by their low stretchability and strain stability under tensile strain. Here, by designing spin valves with zigzag-wrinkled structure, we demonstrated that the magnetotransport properties of our spin valves remained unaffected under 25% biaxial tensile strain, revealing stretchability and strain stability. These outstanding performances are related to the zigzag-wrinkled structure generated after releasing the biaxial prestrain in polymer polydimethylsiloxane substrates. The flattening of the zigzag wrinkles under the biaxial tensile strain releases the direct effect of strain on the metal multilayers, thereby maintaining sensing performances upon stretching. This innovative design paves the way for the development of robust, flexible magnetic devices suitable for wearable technology.

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具有稳定磁感应性能的双轴可拉伸旋转阀

自旋阀因其快速响应和高集成度的优势，在柔性磁性材料和器件领域受到了广泛关注。尽管有这些优点，但自旋阀在可穿戴设备中的实际应用却受到其低拉伸性和拉伸应变稳定性的限制。在这里，我们通过设计具有人字形皱纹结构的自旋阀，证明了自旋阀在 25% 双轴拉伸应变下的磁传输特性不受影响，从而揭示了其拉伸性和应变稳定性。这些出色的性能与聚合物聚二甲基硅氧烷基底释放双轴预应变后产生的人字形皱纹结构有关。人字形皱纹在双轴拉伸应变下变平，释放了应变对金属多层膜的直接影响，从而在拉伸时保持传感性能。这种创新设计为开发适用于可穿戴技术的坚固灵活的磁性器件铺平了道路。

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

IEEE Magnetics Letters PHYSICS, APPLIED-

CiteScore

2.40

自引率

0.00%

发文量

期刊介绍： IEEE Magnetics Letters is a peer-reviewed, archival journal covering the physics and engineering of magnetism, magnetic materials, applied magnetics, design and application of magnetic devices, bio-magnetics, magneto-electronics, and spin electronics. IEEE Magnetics Letters publishes short, scholarly articles of substantial current interest. IEEE Magnetics Letters is a hybrid Open Access (OA) journal. For a fee, authors have the option making their articles freely available to all, including non-subscribers. OA articles are identified as Open Access.