Exchange-Coupled Two-Dimensional MOFs

doi:10.1002/adfm.77949

2026-09-07

DOI：10.1002/adfm.77949

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摘要

En 中文

在二维金属有机框架（2D MOFs）中，磁响应的方向通常被认为由局部配位和晶格对称性决定。本文表明，在扩展的二维配位网络中，剩余分子磁响应可以由底层的铁磁衬底施加。通过元素特异性X射线磁圆二色性，我们研究了石墨烯/Co上的Fe-和Ni-四氰基苯（TCNB）网络，并证明了分子层与钴薄膜之间存在石墨烯介导的铁磁耦合。与以往对孤立分子和密集分子层的研究不同，本研究将衬底介导的界面磁性扩展到电子连接的金属有机框架。通过调节钴的厚度跨越其自旋重取向转变，我们控制了剩余Fe-TCNB响应的方向，使其从主要垂直于平面转变为平行于平面，而无需改变框架的化学或结构。虽然Ni-TCNB表现出场极化但非剩余的响应，但Fe-TCNB显示出与衬底耦合的剩余分量，该分量可维持至室温。这些结果表明，衬底工程是稳定和取向二维金属有机框架中分子磁化的一种途径。

Keyword:

cobalt

condensed matter physics

ferromagnetism

graphene

magnetic circular dichroism

magnetism

magnetization

materials science

metal-organic framework

remanence

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期刊

Advanced Functional Materials

IF:

论文数:

3.5W

被引数:

32.1W

机构

elettra sincrotrone trieste s.c.p.a.

学者数:

论文数: 5

被引数: 0

Paul Scherrer Institut

学者数:

264

论文数: 105

被引数: 1

ALBA Synchrotron Light Source

学者数:

论文数: 53

被引数: 18

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