Open AccessControlled growth of ultrathin ferromagnetic β‐MnSe semiconductor
Author(s) -
Zou Jingyun,
Yang Yumeng,
Hu Dianyi,
Kang Lixing,
Zhu Chao,
Tian Dan,
Lv Xiaodong,
Kutty Govindan,
Guo Yuxi,
Xu Manzhang,
Li Fengyu,
Hong Guo,
Liu Zheng
Publication year - 2022
Publication title -
smartmat
Language(s) - English
Resource type - Journals
ISSN - 2688-819X
DOI - 10.1002/smm2.1084
Subject(s) - ferromagnetism , spintronics , condensed matter physics , materials science , substrate (aquarium) , magnetic semiconductor , density functional theory , curie temperature , magnet , selenide , chemistry , physics , metallurgy , computational chemistry , oceanography , selenium , quantum mechanics , geology
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.