文献类型：期刊文献

英文题名：Vacancies Engineering in Molybdenum Boride MBene Nanosheets to Activate Room-Temperature Ferromagnetism

作者：Zhang, Liangzhu[1,2];Xing, Shucheng[3];He, Tian[4];Wu, Wei-Bin[4];Zhang, An-lei[5];Guo, Zhoubin[6];Das, Pratteek[1];Zheng, Shuanghao[1];Ge, Jun-Yi[4];Feng, Xinliang[7,8];Sun, Zhimei[3];Wu, Zhong-Shuai[1]

机构：[1]Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]Beihang Univ, Int Res Inst Multidisciplinary Sci, Ctr Integrated Computat Mat Engn, Sch Mat Sci & Engn, Beijing 100191, Peoples R China;[4]Shanghai Univ, Mat Genome Inst, Shanghai 200444, Peoples R China;[5]Nanjing Univ Posts & Telecommun, Coll Sci, Nanjing 210023, Peoples R China;[6]Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China;[7]Tech Univ Dresden, Fac Chem & Food Chem, Ctr Adv Elect Dresden Cfaed, D-01062 Dresden, Germany;[8]Max Planck Inst Microstruct Phys, D-06120 Halle, Saale, Germany

年份：2025

卷号：37

期号：1

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20244417301662);WOS:【SCI-EXPANDED(收录号:WOS:001357255600001)】；

基金：L.Z. and S.X. contributed equally to this work. This work was financially supported by the National Natural Science Foundation of China (Grants 22125903, 22439003, 22209176, 22005298, 22209173, 52332005), the National Key R&D Program of China (Grant 2023YFB4005204),Liaoning Natural Science Foundation (2023-BS-007), and Shanghai Pujiang Talent plan project (23PJ1402000). This work is technical supported from Prof. Tong Liu for FIB sample preparation (Nano-X, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences). The authors thank Prof. Mingrun Li for the support of STEM characterization. Open access funding enabled and organized by Projekt DEAL.

语种：英文

外文关键词：MBene; molybdenum boride; nanosheets; room-temperature ferromagnetism

摘要：The rapid development of low energy dissipation spintronic devices has stimulated the search for air-stable 2D nanomaterials possessing room-temperature ferromagnetism. Here the experimental realization of 2D Mo4/3B2 nanosheets is reported with intrinsic room-temperature ferromagnetic characteristics by vacancy engineering. These nanosheets are synthesized by etching the bulk MAB phase (Mo2/3Y1/3)(2)AlB2 into Mo4/3B2 nanosheets in ZnCl2 molten salt. The Mo4/3B2 nanosheets show robust intrinsic ferromagnetic properties, with a saturation magnetic moment of 0.044 emu g(-1) at 300 K, while vacancy-free MoB MBene exhibits paramagnetism. It is elucidated that the Mo-vacancy defect generates large density of states near the Fermi surface and spontaneously spin-split bands through first-principles calculations, which contributes to the non-zero magnetic moment in Mo4/3B2 nanosheets. This work lays the groundwork for activating the magnetic properties of MBene nanosheets by vacancy engineering, offering the possibilities for development of practical spintronic devices.