中国物理B ›› 2018, Vol. 27 ›› Issue (12): 128101-128101.doi: 10.1088/1674-1056/27/12/128101

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Large magnetic moment at sheared ends of single-walled carbon nanotubes

Jian Zhang(张健), Ya Deng(邓娅), Ting-Ting Hao(郝婷婷), Xiao Hu(胡潇), Ya-Yun Liu(刘雅芸), Zhi-Sheng Peng(彭志盛), Jean Pierre Nshimiyimana, Xian-Nian Chi(池宪念), Pei Wu(武佩), Si-Yu Liu(刘思雨), Zhong Zhang(张忠), Jun-Jie Li(李俊杰), Gong-Tang Wang(王公堂), Wei-Guo Chu(褚卫国), Chang-Zhi Gu(顾长志), Lian-Feng Sun(孙连峰)   

  1. 1 CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;
    2 Institute of Physics, Chinese Academy of Sciences(CAS), Beijing 100190, China;
    3 School of Physics and Electronics, Shandong Normal University, Jinan 250014, China;
    4 University of Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2018-05-31 修回日期:2018-09-18 出版日期:2018-12-05 发布日期:2018-12-05
  • 通讯作者: Jian Zhang, Ya Deng, Lian-Feng Sun E-mail:wanggt@sdnu.edu.cn;wgchu@nanoctr.cn;slf@nanoctr.cn
  • 基金资助:

    Project supported by the National Key Research and Development Program of China (Grant Nos. 2018YFA0208403 and 2016YFA0200403), the National Natural Science Foundation of China (Grant Nos. 51472057, 11874129, 91323304, and 11674387), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA09040101), and the Baotou Rare Earth Research and Development Centre, Chinese Academy of Sciences (Grant No. GZR 2018001).

Large magnetic moment at sheared ends of single-walled carbon nanotubes

Jian Zhang(张健)1,4, Ya Deng(邓娅)1,4, Ting-Ting Hao(郝婷婷)2, Xiao Hu(胡潇)1,4, Ya-Yun Liu(刘雅芸)1,4, Zhi-Sheng Peng(彭志盛)3, Jean Pierre Nshimiyimana1,4, Xian-Nian Chi(池宪念)1,4, Pei Wu(武佩)1,4, Si-Yu Liu(刘思雨)3, Zhong Zhang(张忠)1, Jun-Jie Li(李俊杰)2, Gong-Tang Wang(王公堂)3, Wei-Guo Chu(褚卫国)1, Chang-Zhi Gu(顾长志)2, Lian-Feng Sun(孙连峰)1   

  1. 1 CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;
    2 Institute of Physics, Chinese Academy of Sciences(CAS), Beijing 100190, China;
    3 School of Physics and Electronics, Shandong Normal University, Jinan 250014, China;
    4 University of Chinese Academy of Sciences, Beijing 100190, China
  • Received:2018-05-31 Revised:2018-09-18 Online:2018-12-05 Published:2018-12-05
  • Contact: Jian Zhang, Ya Deng, Lian-Feng Sun E-mail:wanggt@sdnu.edu.cn;wgchu@nanoctr.cn;slf@nanoctr.cn
  • Supported by:

    Project supported by the National Key Research and Development Program of China (Grant Nos. 2018YFA0208403 and 2016YFA0200403), the National Natural Science Foundation of China (Grant Nos. 51472057, 11874129, 91323304, and 11674387), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA09040101), and the Baotou Rare Earth Research and Development Centre, Chinese Academy of Sciences (Grant No. GZR 2018001).

摘要:

In this work we report that after single-walled carbon nanotubes (SWNTs) are sheared with a pair of titanium scissors, the magnetization becomes larger than that of the corresponding pristine ones. The magnetization increases proportionally with the number of SWNTs with sheared ends, suggesting that there exist magnetic moments at the sheared ends of SWNTs. By using the coefficient of this linear relation, the average magnetic moment is estimated to be 41.5±9.8 μB (Bohr magneton) per carbon atom in the edge state at temperature of 300.0 K, suggesting that ultrahigh magnetic fields can be produced. The dangling sigma and pi bonds of the carbon atoms at sheared ends play important roles in determining the unexpectedly high magnetic moments, which may have great potential applications.

关键词: carbon nanotubes, shear, open ends, magnetic moments

Abstract:

In this work we report that after single-walled carbon nanotubes (SWNTs) are sheared with a pair of titanium scissors, the magnetization becomes larger than that of the corresponding pristine ones. The magnetization increases proportionally with the number of SWNTs with sheared ends, suggesting that there exist magnetic moments at the sheared ends of SWNTs. By using the coefficient of this linear relation, the average magnetic moment is estimated to be 41.5±9.8 μB (Bohr magneton) per carbon atom in the edge state at temperature of 300.0 K, suggesting that ultrahigh magnetic fields can be produced. The dangling sigma and pi bonds of the carbon atoms at sheared ends play important roles in determining the unexpectedly high magnetic moments, which may have great potential applications.

Key words: carbon nanotubes, shear, open ends, magnetic moments

中图分类号:  (Carbon/carbon-based materials)

  • 81.05.U-
75.75.-c (Magnetic properties of nanostructures) 75.60.-d (Domain effects, magnetization curves, and hysteresis) 81.70.Pg (Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis)