AgVP2Se6中子散射数据集

最近在范德华 (vdWs) 磁体中实现的二维磁性为未来的信息技术带来了希望。然而，由于可以同时控制载流子和自旋，比较少见的vdWs 铁磁半导体在开发具有新功能的二维磁性器件方面尤为重要。金属硫代磷酸盐 (MTP) 是一种多功能的 vdWs 材料体系，它结合了复杂氧化物广受欢迎的特性，是一种很有前途的 vdWs 磁性体系。在这里，我们成功合成了室温电阻率为 1 Ω m 的新型 vdWs 铁磁半导体 MTP AgVP2Se6 单晶。由于 vdWs 沿 c 轴键合的性质，在剥离样品上表征了具有不同厚度的少层 AgVP2Se6 的磁性。 AgVP2Se6 薄片磁性表现出显着的厚度依赖性，在 6.7 nm AgVP2Se6 薄片中观察到矩形磁滞回线，在 2 K 时具有 750 Oe 的大矫顽场和 未降低的19 K 居里温度。该具有半导体行为的 vdWs 铁磁体 AgVP2Se6 将为探索 2D 磁性和自旋电子器件中的潜在应用提供替代平台。

Two-dimensional magnetism realized in van der Waals (vdWs) magnets in recent years has offered promising prospects for future information technology. However, rare vdWs ferromagnetic semiconductors, which enable simultaneous control of both carriers and spins, are particularly crucial for developing 2D magnetic devices with novel functionalities. Metal thiophosphates (MTP) represent a versatile vdWs material system that integrates the highly sought-after properties of complex oxides, positioning it as a promising vdWs magnetic material family. Here, we successfully synthesized a novel vdWs ferromagnetic semiconductor MTP AgVP2Se6 single crystal with a room-temperature resistivity of 1 Ω·m. Owing to the vdWs bonding characteristic along the c-axis, the magnetic properties of few-layer AgVP2Se6 with varying thicknesses were characterized on exfoliated samples. The magnetism of AgVP2Se6 flakes exhibits distinct thickness-dependent behavior: rectangular magnetic hysteresis loops are observed in 6.7 nm AgVP2Se6 flakes, featuring a large coercive field of 750 Oe at 2 K and an unreduced Curie temperature of 19 K. This vdWs ferromagnet AgVP2Se6 with semiconducting behavior will serve as an alternative platform for exploring potential applications in 2D magnetism and spintronic devices.

搜集汇总

背景与挑战

背景概述

该数据集包含AgVP2Se6单晶的中子散射数据，研究了一种新型范德瓦尔斯铁磁半导体材料的磁性特性，其居里温度为19 K，具有厚度依赖的磁性行为。数据集由北京大学研究团队发布，包含22个文件，总大小为956.03KB，适用于凝聚态物理学研究。