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Recent developments on 2D magnetic materials: challenges and opportunities

机译：最近的2D磁性材料的发展：挑战和机遇

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摘要

The emergence of two-dimensional (2D) magnetic materials exhibiting strong magnetization at ultrathin limits above room temperature is promising for miniaturization of devices beyond Moore's law for future energy efficient nanoelectronic devices. Here, the current status, different mechanisms for the existence of magnetism, spin current injection, and other magnetic properties of monolayer to few layers of various 2D magnetic materials are reviewed. Some of the promising applications of these materials are spintronics devices such as spin valves, spin tunnel field-effect transistors, and spin-filtering magnetic tunnel junctions. Due to the tunable electronic properties of these 2D materials, it is quite interesting to inject the spin current with suitable ferromagnetic contacts. For instance, black phosphorus is a layered material with a small Schottky barrier height capable of injecting spin current. This review includes many recently explored 2D magnetic materials ranging from exfoliated 2D crystals to CVD grown materials from single to several layers, demonstrating tunable layer-dependent magnetic properties. We also explore some of the promising theoretical study based on 2D magnetic compounds such as 2D alkali-based chromium chalco-genides, which shows ferromagnetic as well as semiconducting behavior. The layer-dependent magnetic ordering has been observed in layered compounds like 1T-CrTe_2, VSe_2, CrI_3, and Fe_3GeTe_2, which have great potential for the future applications in magnetic-based electronic devices. Finally, we emphasize the challenges, opportunities, and future directions of the 2D magnetic materials, where new discoveries might have outstanding impact in transformational scientific breakthroughs towards memory, spintronics, optoelectronics, and other multifunctional device applications.
机译：二维（2D）磁性材料的出现在室温高于室温的超局限上具有强磁化的磁性材料是对未来节能纳米电子器件超越摩尔定律的装置的小型化。这里，综述了当前状态，用于存在磁性，旋转电流喷射和单层的其他磁性的不同机制，以少量的各种2D磁性材料层。这些材料的一些有希望的应用是旋转阀门，自旋隧道场效应晶体管和旋滤磁隧道结等的闪铜器。由于这些2D材料的可调谐电子性质，用合适的铁磁性触点注入旋转电流非常有意思。例如，黑磷是具有能够注入旋转电流的小肖特基势垒高度的分层材料。该评价包括许多最近探索的2D磁性材料，从exfoliated 2d晶体到CVD种植材料，从单层到几层，展示可调层依赖性磁性。我们还探讨了基于2D磁性化合物的一些有前途的理论研究，例如2D碱基铬核苷酸，其表示铁磁性以及半导体行为。在1T-CRTE_2，VSE_2，CRI_3和FE_3GETE_3等层状化合物中观察到依赖于层的磁排序，这对于未来的基于磁电子设备的应用具有很大的潜力。最后，我们强调了2D磁性材料的挑战，机遇和未来方向，新发现可能对变革的科学突破对记忆，闪光灯，光电子和其他多功能设备应用产生突出的影响。

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  • 来源
    《Emergent Materials》 |2021年第4期|827-846|共20页
  • 作者

    Shalini Kumari; Dhiren K. Pradhan; Nihar R. Pradhan; Philip D. Rack;

  • 作者单位

    Department of Materials Science & Engineering The Pennsylvania State University University Park Pennsylvania 16802 USA;

    Department of Materials Science & Engineering University of Tennessee Knoxville Tennessee 37996 USA Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA;

    Layered Materials and Device Physics Laboratory Department of Chemistry Physics and Atmospheric Science Jackson State University Jackson MS 39217 USA;

    Department of Materials Science & Engineering University of Tennessee Knoxville Tennessee 37996 USA Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    2D materials; Spintronics; Magnetism; Spin injection;

    机译：2D材料;闪蒸;磁性;旋转注射;

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