journal article·2019-04

Robust Above‐Room‐Temperature Ferromagnetism in Few‐Layer Antimonene Triggered by Nonmagnetic Adatoms

Xian Tang, Liang Hu, Touwen Fan, Le Zhang, Liping Zhu, Hui Li, Haoliang Liu, Jiyuan Liang, Kedong Wang, Zhongjun Li, Shuangchen Ruan, Yupeng Zhang, Dianyuan Fan, Weicheng Chen, Yu‐Jia Zeng, Han Zhang

Advanced Functional Materials· Volume 29· Issue 15
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Abstract

Abstract 2D ferromagnets have attracted considerable attention due to their strong potential in the post‐Moore Law era. However, intrinsic 2D ferromagnetic materials typically suffer from suppressed Curie temperature due to thermal fluctuation, magnetic order instability in the 2D limit, and others. Herein, a nonmagnetic fluorine modification strategy is proposed to control the ferromagnetism of air‐stable antimonene. It is demonstrated that fluorinated antimonene (F‐antimonene), synthesized via an electrochemical exfoliation and synchronous fluorination method, exhibits robust ferromagnetism with a Curie temperature of up to 717 K (compared with a Curie temperature of 220 K for pristine antimonene) and a saturation magnetization of ≈0.1 emu g−1 (determined by the fluorination degree). First‐principles simulations confirm that the robust long‐range ferromagnetic order in the half‐metallic F‐antimonene is induced by the low‐density sp‐electron‐polarized impurity subbands. The study constitutes a nonmagnetic control of robust above‐room‐temperature ferromagnetism in monoelemental 2D semiconductors and paves a new route toward 2D atomic layer‐based spin devices.
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Research context

OpenAlex topics: 2D Materials and Applications · Graphene research and applications · Topological Materials and Phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics Collaborative Innovation Center for Optoelectronic Science and Technology and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Shenzhen University Shenzhen 518060 China

Shenzhen Key Laboratory of Laser Engineering College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 China

School of Materials Science and Energy Engineering Foshan University Foshan 528000 China

State Key Laboratory of Silicon Materials Department of Materials Science and Engineering Zhejiang University Hangzhou 310027 China

Department of Physics Southern University of Science and Technology Shenzhen 518055 China

Faculty of Information Technology Macau University of Science and Technology Macau 519020 China

School of Physics and Optoelectronic Engineering Foshan University Foshan 528000 China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Guangdong Province · Shenzhen Science and Technology Innovation Commission

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