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直接观察机械应变诱导波导器在一个 (Fe,Ni,Pd) P磁铁中切换与无otropic Dzyaloshinskii-Moriya 相互作用

Shunsuke Mori¹, Seiichiro Ii², Taku Moronaga³

¹RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan.

ACS applied materials & interfaces

|April 8, 2025

概括

应变可以控制材料中的磁条域. 沿着磁条施加压力,可以切换它们的波向量,为电子设备提供新的可能性.

科学领域:

凝聚物质物理学凝聚物质物理学
材料科学是一种材料科学.
种子电子学种子电子学

背景情况:

应变诱导的相位过渡是材料科学中的关键现象.
斯特兰特罗尼克斯为下一代计算和内存提供低能耗解决方案.
实时空间观察应变诱导的磁转变仍然具有挑战性.

研究的目的:

在单轴压缩应变下研究磁纹理.
实时观察应变诱导的磁条领域切换.
探索通过应用于应变的磁纹的控制.

主要方法:

洛伦兹传输电子显微镜 (L-TEM) 用于实时空间观测.
在现场纳米沉积技术应用受控应变.
微磁模拟和有限元法 (FEM) 的计算.

主要成果:

在沿着条纹施加应变时,证明了磁条域波动向量 (q) 的切换.
当应力垂直于条纹时,没有观察到q方向的变化.
FEM计算显示,缩的压力压力触发了条纹切换.

结论:

应变可以有效地控制磁条的磁域方向.
空间集中的应力对于触发磁条切换至关重要.
为电子材料中磁纹的基于应变的控制提供了一条途径.

关键词:

兹亚洛辛斯基-莫里亚相互作用洛伦茨传输电子显微镜电子显微镜在现场纳米印记.磁性纹理,波向量切换的切换.单轴应变的一个轴向应变.

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Measurements of Strain

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Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...