材料科学
结晶度
化学计量学
磁性
相(物质)
晶体生长
金属
化学物理
纳米技术
化学工程
凝聚态物理
结晶学
化学
物理化学
工程类
物理
复合材料
有机化学
冶金
作者
Huaning Jiang,Zhihao Zang,Xingguo Wang,Haifeng Que,Lei Wang,Kunpeng Si,Peng Zhang,Yu Ye,Yongji Gong
出处
期刊:Nano Letters
[American Chemical Society]
日期:2022-11-16
卷期号:22 (23): 9477-9484
被引量:11
标识
DOI:10.1021/acs.nanolett.2c03562
摘要
Two-dimensional (2D) magnetic materials provide an ideal platform for investigating novel magnetism and spin behavior in low-dimensional systems while being restricted by the deficiency of accurate bottom-up synthesis. To overcome this difficulty, a facile and universal flux-assisted growth (FAG) method is proposed to synthesize the multicomponent FexGeTe2 (x = 3-5) with different Fe contents and even alloyed with hetero metal atoms. This one-to-one method ensures the stoichiometry consistency from the FexGeTe2 and MyFe5-yGeTe2 (M = Co, Ni) bulk crystal precursors to the 2D nanosheets, with controllable composition. Tuning the growth temperatures can provide thickness-tunable products. Changeable magnetic properties of FexGeTe2 and alloyed CoyFe5-yGeTe2 are substantiated by the superconducting quantum interference device and reflective magnetic circular dichroism. This method generates thickness-tunable high-crystallinity FexGeTe2 samples without phase separation and exhibits a high tolerance to different substrates and a large temperature window, providing a new avenue to synthesize and explore such multicomponent 2D magnets and even the alloyed ones.
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