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Two-Dimensional Room-Temperature Magnetic Nonstoichiometric Fe7Se8 Nanocrystals: Controllable Synthesis and Magnetic Behavior

文献类型：期刊论文

作者Zhao, Zijing2,3; Zhou, Jian4,5; Liu, Luhao4,5; Liu, Nanshu1; Huang, Jianqi6; Zhang, Biao2; Li, Wei2; Zeng, Yi2; Zhang, Teng2; Ji, Wei1
刊名NANO LETTERS
出版日期2022-01-21
页码9
ISSN号1530-6984
关键词Two-dimensional magnetic materials Fe7Se8 space-confined chemical vapor deposition nonstoichiometric compounds room-temperature magnetic
DOI10.1021/acs.nanolett.1c04403
通讯作者Yang, Teng(yangteng@imr.ac.cn) ; Li, Songlin(sli@nju.edu.cn) ; Hou, Yanglong(hou@pku.edu.cn)
英文摘要Two-dimensional (2D) magnetic materials have attracted significant attention for promising applications in energy-saving logic and robust memory devices. However, most 2D magnets discovered so far typically feature drawbacks for practical applications due to low critical temperatures. Herein, we synthesize ultrathin room-temperature (RT) magnetic Fe7Se8 nanoflakes via the space-confined chemical vapor deposition method. It is found that the appropriate supply and control of Se concentration in the reaction chamber is crucial for synthesizing high-quality non-stoichiometric Fe7Se8 nanoflakes. Cryogenic electrical and magnetic characterizations reveal the emergence of spin reorientation at & SIM;130 K and the survival of long-range magnetic ordering up to room temperature. The RT magnetic domain structures with different thicknesses are also uncovered by magnetic force microscopy. Moreover, theoretical calculations confirm the spin configuration and metallic band structure. The outstanding characteristics exhibited by Fe7Se8 nanoflakes, including RT magnetism, spin reorientation property, and good electrical conductivity, make them a potential candidate for RT spintronics.
资助项目National Key R&D Program of China[2017YFA0206301] ; National Key R&D Program of China[2017YFA0206304] ; National Natural Science Foundation of China[51631001] ; National Natural Science Foundation of China[51672010] ; National Natural Science Foundation of China[11974422]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000748031000001
资助机构National Key R&D Program of China ; National Natural Science Foundation of China
源URL[http://ir.imr.ac.cn/handle/321006/173663]  
专题金属研究所_中国科学院金属研究所
通讯作者Yang, Teng; Li, Songlin; Hou, Yanglong
作者单位1.Renmin Univ China, Dept Phys, Beijing Key Lab Optoelect Funct Mat & Micronano D, Beijing 100872, Peoples R China
2.Peking Univ, Beijing Innovat Ctr Engn Sci & Adv Technol, Sch Mat Sci & Engn, Beijing Key Lab Magnetoelect Mat & Devices, Beijing 100871, Peoples R China
3.Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China
4.Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
5.Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Peoples R China
6.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Zijing,Zhou, Jian,Liu, Luhao,et al. Two-Dimensional Room-Temperature Magnetic Nonstoichiometric Fe7Se8 Nanocrystals: Controllable Synthesis and Magnetic Behavior[J]. NANO LETTERS,2022:9.
APA Zhao, Zijing.,Zhou, Jian.,Liu, Luhao.,Liu, Nanshu.,Huang, Jianqi.,...&Hou, Yanglong.(2022).Two-Dimensional Room-Temperature Magnetic Nonstoichiometric Fe7Se8 Nanocrystals: Controllable Synthesis and Magnetic Behavior.NANO LETTERS,9.
MLA Zhao, Zijing,et al."Two-Dimensional Room-Temperature Magnetic Nonstoichiometric Fe7Se8 Nanocrystals: Controllable Synthesis and Magnetic Behavior".NANO LETTERS (2022):9.

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来源：金属研究所

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