A general thermodynamics-triggered competitive growth model to guide the synthesis of two-dimensional nonlayered materials

Zijing Zhao, Zhi Fang, Xiaocang Han, Shiqi Yang, Cong Zhou, Yi Zeng, Biao Zhang, Wei Li, Zhan Wang, Ying Zhang, Jian Zhou, Jiadong Zhou, Yu Ye, Xinmei Hou, Xiaoxu Zhao (), Song Gao and Yanglong Hou ()
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Zijing Zhao: Peking University
Zhi Fang: Peking University
Xiaocang Han: Peking University
Shiqi Yang: Peking University
Cong Zhou: Xi’an Jiaotong University
Yi Zeng: Peking University
Biao Zhang: Peking University
Wei Li: Peking University
Zhan Wang: Chinese Academy of Sciences
Ying Zhang: Chinese Academy of Sciences
Jian Zhou: Xi’an Jiaotong University
Jiadong Zhou: School of Physics, Beijing Institute of Technology
Yu Ye: Peking University
Xinmei Hou: University of Science and Technology Beijing
Xiaoxu Zhao: Peking University
Song Gao: South China University of Technology
Yanglong Hou: Peking University

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract Two-dimensional (2D) nonlayered materials have recently provoked a surge of interest due to their abundant species and attractive properties with promising applications in catalysis, nanoelectronics, and spintronics. However, their 2D anisotropic growth still faces considerable challenges and lacks systematic theoretical guidance. Here, we propose a general thermodynamics-triggered competitive growth (TTCG) model providing a multivariate quantitative criterion to predict and guide 2D nonlayered materials growth. Based on this model, we design a universal hydrate-assisted chemical vapor deposition strategy for the controllable synthesis of various 2D nonlayered transition metal oxides. Four unique phases of iron oxides with distinct topological structures have also been selectively grown. More importantly, ultra-thin oxides display high-temperature magnetic ordering and large coercivity. MnxFeyCo3-x-yO4 alloy is also demonstrated to be a promising room-temperature magnetic semiconductor. Our work sheds light on the synthesis of 2D nonlayered materials and promotes their application for room-temperature spintronic devices.

Date: 2023
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DOI: 10.1038/s41467-023-36619-5

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