Cr cation-anchored carbon nanosheets: synthesis, paramagnetism and ferromagnetism

Herein, a strategy of Cr cations solely anchored on two dimensional carbon nanosheets by Cr-N bond is developed. The atomically dispersed Cr cations and Cr-N3 coordination are demonstrated by extended X-ray absorption fine structure characterization. Furthermore, the Cr-N3 anchoredcarbon nanosheets...

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Published inNanotechnology Vol. 32; no. 33; pp. 335706 - 335712
Main Authors Xia, Baorui, Zhang, Haiyi, Liao, Zhongxin, Wu, Jian-Feng, Hu, Yongfeng, Shakouri, Mohsen, Gao, Daqiang, Xue, Desheng
Format Journal Article
LanguageEnglish
Published England IOP Publishing 13.08.2021
Subjects
carbon
magnetism
nanosheets
synthesis
magnetism
Nanosheets
Synthesis
carbon
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Summary:Herein, a strategy of Cr cations solely anchored on two dimensional carbon nanosheets by Cr-N bond is developed. The atomically dispersed Cr cations and Cr-N3 coordination are demonstrated by extended X-ray absorption fine structure characterization. Furthermore, the Cr-N3 anchoredcarbon nanosheets exhibits ferromagnetism, wherein the magnetization varies directly with the Cr content and the maximum magnetization is approximately 0.86 emu/g (3 T, 50 K). The X-ray magnetic circular dichroism and first-principle calculation indicate that the magnetism is caused by the Cr3+ component of the anchored Cr atoms. This study sets single cation anchoring carbon as a suitable candidate for future spintronics.
Bibliography:NANO-129151.R1
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ISSN:0957-4484
1361-6528
DOI:10.1088/1361-6528/ac00df