AI 中文总结
介绍层状磁性材料高压调控的研究,阐述其独特结构及高压下的特性,系统介绍原位高压实验方法,回顾压力诱导现象及调控机制,探讨压力与电场协同等未来研究方向。
AI 中文摘要
二维范德华材料因其独特的层状结构和优异性能在诸多领域有巨大潜在应用。与三维体材料相比,层状体系层间靠弱范德华相互作用耦合,结构压缩性更高,对外部压力更敏感。高压能拓展相空间,诱发多种物理性质。本文系统介绍原位高压实验方法,回顾层状磁性材料中代表性压力诱导现象及调控机制,最后探讨未来方向,如压力与电场等协同多场控制及压力猝灭策略等。
英文摘要
Two-dimensional van der Waals materials have enormous potential applications in many fields due to their unique layered structure and excellent properties. Compared with three-dimensional bulk materials, layered systems are coupled by weak van der Waals interactions between layers, endowing them with much higher structural compressibility, particularly along the interlayer direction, which is more sensitive to external pressure. High pressure can expand the accessible phase space, enabling the synthesis of new materials or the retention of metastable phases. On the microscopic level, pressure can significantly tune the interlayer structure and interactions, induce changes in the electronic structure, and consequently give rise to a variety of rich physical properties. This article systematically introduces in situ high-pressure experimental approaches, including diamond anvil cells combined with X-ray and spectroscopic techniques, high-pressure magnetic transport measurements, and emerging NV-center quantum sensing. It further reviews representative pressure-induced phenomena and underlying tuning mechanisms in layered magnetic materials, such as high-spin to low-spin transitions of transition-metal ions and the accompanying structural phase transitions and superconductivity; substantial enhancement of the Curie temperature and continuous switching of magnetocrystalline anisotropy; and antiferromagnetic-to-ferromagnetic transitions achieved by modulating exchange interactions or via stacking engineering. Finally, we discuss future directions, including synergistic multi-field control by combining pressure with electric fields and twisted heterostructures, as well as strategies such as pressure quenching to retain high-pressure metastable magnetic phases at ambient conditions.