Magnetic and magneto-transport properties of non-collinear antiferromagnetic Mn3Ge epitaxial films

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

APL Materials Pub Date : 2024-07-12 DOI:10.1063/5.0217710

Yutaro Takeuchi, Hossein Sepehri-Amin, Satoshi Sugimoto, Takanobu Hiroto, Shinya Kasai

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引用次数: 0

Abstract

Antiferromagnetic Mn3X (X = Sn, Ge, Ga, and Pt) possessing non-collinear spin structures with Kagome lattices have attracted increasing interest because of their unique properties, such as significant anomalous Hall and magneto-optical Kerr effects. Recent advances in spintronic devices that use non-collinear antiferromagnets have inspired research into various materials for exploiting their potential. In this study, we investigated the magnetic and magneto-transport properties of 11̄00-oriented epitaxial and polycrystalline Mn3Ge films deposited by magnetron sputtering. Anomalous Hall conductivity monotonically decreases with temperature in an epitaxial Mn3Ge film, whereas the polycrystalline sample demonstrates a different trend. Furthermore, we obtained a large in-Kagome-plane uniaxial magnetic anisotropy of epitaxial Mn3Ge above ambient temperature, thereby leading to higher thermal stability and robustness against the external field. Our results indicate the potential of Mn3Ge for future functional, high-speed, and high-density spintronics devices using antiferromagnets.

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非共轭反铁磁性 Mn3Ge 外延薄膜的磁性和磁传输特性

反铁磁性 Mn3X（X = Sn、Ge、Ga 和 Pt）具有卡戈米晶格的非对偶自旋结构，由于其独特的性质，如显著的反常霍尔效应和磁光克尔效应，吸引了越来越多的关注。使用非对偶反铁磁体的自旋电子器件的最新进展激发了对各种材料的研究，以挖掘它们的潜力。在本研究中，我们研究了通过磁控溅射沉积的 11̄00 取向外延和多晶 Mn3Ge 薄膜的磁性和磁传输特性。外延 Mn3Ge 薄膜的反常霍尔电导率随温度的升高而单调降低，而多晶样品则呈现出不同的趋势。此外，在环境温度以上，我们还获得了外延 Mn3Ge 的较大的 Kagome 面内单轴磁各向异性，因此具有更高的热稳定性和对外部磁场的稳健性。我们的研究结果表明了 Mn3Ge 在未来利用反铁磁体制造功能性、高速和高密度自旋电子器件方面的潜力。

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

APL Materials NANOSCIENCE & NANOTECHNOLOGYMATERIALS SCIE-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

9.60

自引率

3.30%

发文量

199

审稿时长

2 months

期刊介绍： APL Materials features original, experimental research on significant topical issues within the field of materials science. In order to highlight research at the forefront of materials science, emphasis is given to the quality and timeliness of the work. The journal considers theory or calculation when the work is particularly timely and relevant to applications. In addition to regular articles, the journal also publishes Special Topics, which report on cutting-edge areas in materials science, such as Perovskite Solar Cells, 2D Materials, and Beyond Lithium Ion Batteries.