Thermal effects on damping determination of perpendicular MRAM devices by spin-torque ferromagnetic resonance

IF 2.7 3区物理与天体物理 Q2 PHYSICS, APPLIED

Journal of Applied Physics Pub Date : 2024-09-17 DOI:10.1063/5.0231388

H. J. Richter, G. Mihajlović, R. V. Chopdekar, W. Jung, J. Gibbons, N. D. Melendez, M. K. Grobis, T. S. Santos

引用次数: 0

Abstract

We report device-level damping measurements using spin-torque driven ferromagnetic resonance on perpendicular magnetic random-access memory cells. It is shown that thermal agitation enhances the apparent damping for cells smaller than about 55 nm. The effect is fundamental and does not reflect a true damping increase. In addition to the thermal effect, it is still found that device-level damping is higher than film-level damping and increases with decreasing cell size. This is attributed to edge damage caused by device patterning.

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热效应对通过自旋扭矩铁磁共振确定垂直 MRAM 器件阻尼的影响

我们报告了利用自旋扭矩驱动的铁磁共振对垂直磁性随机存取存储器单元进行的器件级阻尼测量。结果表明，对于小于约 55 nm 的单元，热搅拌会增强表观阻尼。这种效应是基本的，并不反映真正的阻尼增加。除了热效应外，研究还发现，器件级阻尼高于薄膜级阻尼，并且随着电池尺寸的减小而增加。这归因于器件图案化造成的边缘损伤。

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

Journal of Applied Physics 物理-物理：应用

CiteScore

5.40

自引率

9.40%

发文量

1534

审稿时长

2.3 months

期刊介绍： The Journal of Applied Physics (JAP) is an influential international journal publishing significant new experimental and theoretical results of applied physics research. Topics covered in JAP are diverse and reflect the most current applied physics research, including: Dielectrics, ferroelectrics, and multiferroics- Electrical discharges, plasmas, and plasma-surface interactions- Emerging, interdisciplinary, and other fields of applied physics- Magnetism, spintronics, and superconductivity- Organic-Inorganic systems, including organic electronics- Photonics, plasmonics, photovoltaics, lasers, optical materials, and phenomena- Physics of devices and sensors- Physics of materials, including electrical, thermal, mechanical and other properties- Physics of matter under extreme conditions- Physics of nanoscale and low-dimensional systems, including atomic and quantum phenomena- Physics of semiconductors- Soft matter, fluids, and biophysics- Thin films, interfaces, and surfaces