Origin of two-dimensional MXene/ferromagnetic interface evaluated by angle-dependent hard X-ray photoemission spectroscopy.

IF 6.9 3区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science and Technology of Advanced Materials Pub Date : 2025-08-22 eCollection Date: 2025-01-01 DOI:10.1080/14686996.2025.2551484

Prabhat Kumar, Shunsuke Tsuda, Koichiro Yaji, Shinji Isogami

{"title":"Origin of two-dimensional MXene/ferromagnetic interface evaluated by angle-dependent hard X-ray photoemission spectroscopy.","authors":"Prabhat Kumar, Shunsuke Tsuda, Koichiro Yaji, Shinji Isogami","doi":"10.1080/14686996.2025.2551484","DOIUrl":null,"url":null,"abstract":"Emergent ferromagnetism on the surface of two-dimensional (2D) MXene is investigated by X-ray magnetic circular dichroism (XMCD) and angle-dependent hard X-ray photoemission spectroscopy (HAXPES). Focusing on Cr2N as one of the 2D-MXenes, high quality bilayers of Cr2N/Co and Cr2N/Pt are prepared by a magnetron sputtering technique. XMCD reveals the induced magnetic moment of Cr in the Cr2N/Co interface, while it is not observed in the Cr2N/Pt interface at room temperature. In order to distinguish the possible origins of either the interlayer magnetic exchange coupling or the charge transfer model as the source of ferromagnetism at the interface, the additional controlled Cr2N/Cu bilayer, whose work function of Cu is consistent with Co, is prepared. HAXPES spectra for the Cr 2p core level near the interface of Cr2N/Cu are consistent with that of Cr2N/Co, indicating that the induced magnetic moment of Cr observed by XMCD for Cr2N/Co can be attributed to the model of interlayer magnetic exchange coupling, rather than the charge transfer model, leading to emergent ferromagnetism at the interface with 2D-MXene.","PeriodicalId":21588,"journal":{"name":"Science and Technology of Advanced Materials","volume":"26 1","pages":"2551484"},"PeriodicalIF":6.9000,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12409894/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science and Technology of Advanced Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/14686996.2025.2551484","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Emergent ferromagnetism on the surface of two-dimensional (2D) MXene is investigated by X-ray magnetic circular dichroism (XMCD) and angle-dependent hard X-ray photoemission spectroscopy (HAXPES). Focusing on Cr₂N as one of the 2D-MXenes, high quality bilayers of Cr₂N/Co and Cr₂N/Pt are prepared by a magnetron sputtering technique. XMCD reveals the induced magnetic moment of Cr in the Cr₂N/Co interface, while it is not observed in the Cr₂N/Pt interface at room temperature. In order to distinguish the possible origins of either the interlayer magnetic exchange coupling or the charge transfer model as the source of ferromagnetism at the interface, the additional controlled Cr₂N/Cu bilayer, whose work function of Cu is consistent with Co, is prepared. HAXPES spectra for the Cr 2p core level near the interface of Cr₂N/Cu are consistent with that of Cr₂N/Co, indicating that the induced magnetic moment of Cr observed by XMCD for Cr₂N/Co can be attributed to the model of interlayer magnetic exchange coupling, rather than the charge transfer model, leading to emergent ferromagnetism at the interface with 2D-MXene.

查看原文本刊更多论文

用角度相关硬x射线光发射光谱评价二维MXene/铁磁界面的起源。

利用x射线磁圆二色性（XMCD）和角相关硬x射线光发射光谱（HAXPES）研究了二维MXene表面的涌现铁磁性。以Cr2N作为2D-MXenes中的一种为研究对象，采用磁控溅射技术制备了高质量的Cr2N/Co和Cr2N/Pt双层膜。XMCD显示Cr2N/Co界面中存在Cr的感应磁矩，而在室温下Cr2N/Pt界面中没有。为了区分层间磁交换耦合或电荷转移模型作为界面铁磁性来源的可能来源，制备了Cu与Co功函数一致的附加可控Cr2N/Cu双分子层。Cr2N/Cu界面附近Cr2N/Co的HAXPES能谱与Cr2N/Co的HAXPES能谱一致，表明XMCD观察到的Cr2N/Co的Cr感应磁矩可归因于层间磁交换耦合模型，而不是电荷转移模型，导致与2D-MXene界面处出现铁磁性。

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

Science and Technology of Advanced Materials 工程技术-材料科学：综合

CiteScore

10.60

自引率

3.60%

发文量

审稿时长

4.8 months

期刊介绍： Science and Technology of Advanced Materials (STAM) is a leading open access, international journal for outstanding research articles across all aspects of materials science. Our audience is the international community across the disciplines of materials science, physics, chemistry, biology as well as engineering. The journal covers a broad spectrum of topics including functional and structural materials, synthesis and processing, theoretical analyses, characterization and properties of materials. Emphasis is placed on the interdisciplinary nature of materials science and issues at the forefront of the field, such as energy and environmental issues, as well as medical and bioengineering applications. Of particular interest are research papers on the following topics: Materials informatics and materials genomics Materials for 3D printing and additive manufacturing Nanostructured/nanoscale materials and nanodevices Bio-inspired, biomedical, and biological materials; nanomedicine, and novel technologies for clinical and medical applications Materials for energy and environment, next-generation photovoltaics, and green technologies Advanced structural materials, materials for extreme conditions.