Journal
CHEMICAL SCIENCE
Volume 5, Issue 6, Pages 2251-2255Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3sc53303d
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Funding
- National Natural Science Foundation of China [21222101, 11132009, 21331005, 11321503, J1030412]
- Chinese Academy of Science [XDB01010300]
- Fok Ying-Tong Education Foundation, China [141042]
- Program for New Century Excellent Talents in University
- Fundamental Research Funds for the Central Universities [WK2060190027, WK2310000024]
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Two dimensional (2D) nanosheets have shown great potential for their applications in next-generation nanoelectronic devices. However, developing 2D nanosheets for next-generation spintronics has been blocked due to their lack of robust intrinsic ferromagnetic behavior. Here, we highlight the robust ferromagnetic behavior in a 2D inorganic graphene-like structure. delta-FeOOH ultrathin nanosheets, as a new 2D material, exhibit an unprecedented high saturation magnetization value of 7.5 emu g(-1) at room temperature, which is the highest value among graphene and graphene analogues. Atomic-scale topochemical transformation ensures the formation of 2D delta-FeOOH ultrathin nanosheets from intermediate Fe(OH)(2) nanosheets. Moreover, the delta-FeOOH ultrathin nanosheet is found to be a semiconductor with a direct band gap of 2.2 eV. Owing to the advantages of robust ferromagnetism in semiconductors, delta-FeOOH ultrathin nanosheets are promising candidates for the construction of nextgeneration spintronics.
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