Controlled growth of ultrathin ferromagnetic β‐MnSe semiconductor
Jingyun Zou,
Yumeng Yang,
Dianyi Hu,
Lixing Kang,
Chao Zhu,
Dan Tian,
Xiaodong Lv,
Govindan Kutty,
Yuxi Guo,
Manzhang Xu,
Fengyu Li,
Guo Hong,
Zheng Liu
Affiliations
Jingyun Zou
Division of Advanced Nano‐Materials, Suzhou Institute of Nano‐Tech and Nano‐Bionics Chinese Academy of Sciences Suzhou China
Yumeng Yang
School of Information Science and Technology ShanghaiTech University Shanghai China
Dianyi Hu
School of Materials Science and Engineering Nanyang Technological University Singapore Singapore
Lixing Kang
Division of Advanced Nano‐Materials, Suzhou Institute of Nano‐Tech and Nano‐Bionics Chinese Academy of Sciences Suzhou China
Chao Zhu
School of Materials Science and Engineering Nanyang Technological University Singapore Singapore
Dan Tian
College of Materials Science and Engineering, Co‐Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry University Nanjing China
Xiaodong Lv
School of Physical Science and Technology Inner Mongolia University Hohhot China
Govindan Kutty
School of Materials Science and Engineering Nanyang Technological University Singapore Singapore
Yuxi Guo
School of Materials Science and Engineering Nanyang Technological University Singapore Singapore
Manzhang Xu
School of Materials Science and Engineering Nanyang Technological University Singapore Singapore
Fengyu Li
School of Physical Science and Technology Inner Mongolia University Hohhot China
Guo Hong
Institute of Applied Physics and Materials Engineering University of Macau Taipa Macau China
Zheng Liu
School of Materials Science and Engineering Nanyang Technological University Singapore Singapore
Abstract Two‐dimensional (2D) magnetic crystals with intrinsic ferromagnetism are highly desirable for novel spin‐electronic devices. However, the controllable synthesis of 2D magnets, especially the direct growth of 2D magnets on substrate surfaces, is still a challenge. Here, we demonstrate the synthesis of ultrathin zinc‐blende phase manganese selenide (β‐MnSe) nanosheets using the chemical vapor deposition (CVD) technique. The 2D β‐MnSe crystals exhibit distinct ferromagnetic properties with a Curie temperature of 42.3 K. Density functional theory (DFT) calculations suggest that the ferromagnetic order in β‐MnSe originates from the exchange coupling between the unsaturated Se and Mn atoms. This study presents significant progress in the CVD growth of ultrathin 2D magnetic materials by thinning bulk magnets, and it will pave the way for the building of energy‐efficient spintronic devices in the future.
