| Autor: |
Jian Zhang, Ya Deng, Ting-Ting Hao, Xiao Hu, Ya-Yun Liu, Zhi-Sheng Peng, Jean Pierre Nshimiyimana, Xian-Nian Chi, Pei Wu, Si-Yu Liu, Zhong Zhang, Jun-Jie Li, Gong-Tang Wang, Wei-Guo Chu, Chang-Zhi Gu, Lian-Feng Sun |
| Předmět: |
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| Zdroj: |
Chinese Physics B; Dec2018, Vol. 27 Issue 12, p1-1, 1p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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