Synthesis of Two-Dimensional Antiferromagnetic Semiconductor CuFeS2 with a High Néel Temperature

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-03-29 DOI:10.1021/acs.nanolett.5c01088

Di Wang, Yingying Liu, Hua Zhang, Yong Liu, Dan Li, Zucheng Zhang, Ping Lu, Chen Yi, Kun He, Liqiang Zhang, Yanru Wang, Shanhao Li, Miaomiao Liu, Hongmei Zhang, Shula Chen, Zhihui Chen, Xidong Duan

引用次数: 0

Abstract

Two-dimensional (2D) antiferromagnetic (AFM) semiconductors have garnered significant attention due to their promising applications in spintronics and intriguing magneto-optical performance. However, low Néel temperatures (T_N) and inadequate air stability constrain their application. Here, we report the synthesis of a 2D semiconducting CuFeS₂ (CFS) exhibiting AFM order. It features a high T_N (473.0 ± 0.4 K) and remains stable in air for at least 2 weeks. The semiconductor characteristics are confirmed via electrical measurements. AFM order and a high magnetic phase transition temperature are demonstrated by Raman and second-harmonic generation (SHG) spectra. This work provides a new 2D AFM semiconductor with a high Néel temperature, offering a novel platform for studying unconventional physical phenomena and spintronics.

Abstract Image

查看原文本刊更多论文

高低温二维反铁磁半导体CuFeS2的合成

二维（2D）反铁磁（AFM）半导体因其在自旋电子学中的广阔应用前景和引人入胜的磁光性能而备受关注。然而，较低的奈尔温度（TN）和不足的空气稳定性限制了它们的应用。在此，我们报告了二维半导体铜铁二氧化物（CuFeS2，CFS）的合成过程，它显示了原子力显微镜下的有序性。它具有较高的 TN 值（473.0 ± 0.4 K），在空气中至少能保持稳定 2 周。通过电学测量证实了其半导体特性。拉曼光谱和二次谐波发生（SHG）光谱证明了原子力显微镜阶次和高磁相变温度。这项工作提供了一种具有高内尔温度的新型二维原子力显微半导体，为研究非常规物理现象和自旋电子学提供了一个新平台。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.