Raman study of correlation between defects and ferromagnetism in graphite
文献类型：期刊论文
| 作者 | He, Zhoutong1; Xia, Huihao1; Zhou, Xingtai2; Yang, Xinmei2; Song, You3; Wang, Tianwei3 |
| 刊名 | Journal of physics d-applied physics
 |
| 出版日期 | 2011-03-02 |
| 卷号 | 44期号:8页码:9 |
| ISSN号 | 0022-3727 |
| DOI | 10.1088/0022-3727/44/8/085001 |
| 通讯作者 | Xia, huihao(xiahuihao@sinap.ac.cn) |
| 英文摘要 | The variation of ferromagnetism induced by c-12(+) ion implantation in highly oriented pyrolytic graphite was systematically studied by using raman spectroscopy in conjunction with magnetic moment measurements and annealing treatments. it was found that the magnetization of the implanted sample was closely correlated with the density of the defects, which was characterized by the raman spectra, produced by the implantation. it is clear that by using consecutive implantation steps at different energies to increase the vacancy defects in the implanted layer, the magnetization of the sample increases with the number of the implantation steps until the fourth step of implantation, which causes the near surface layer to be highly disordered or amorphous, weakening the magnetic coupling and thus resulting in the decrease in magnetization. the annealing treatments of the sample indicate that the ferromagnetism induced by the implantations is stable at room temperature. however, when the sample is annealed at 473k (the wigner energy release temperature), the density of vacancies and interstitials is abruptly decreased and the magnetism induced by the implantations is extinguished. this finding gives a clear indication of the key role of the defects produced by c+ ion implantation in graphite. |
| WOS关键词 | RAY-FLUORESCENCE ANALYSIS ; CARBON NANOTUBES ; IRRADIATED GRAPHITE ; MAGNETIC-PROPERTIES ; RADIATION-DAMAGE ; SPECTROSCOPY ; GRAPHENE ; DIFFUSION ; SYSTEMS |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000287195000003 |
| 出版者 | IOP PUBLISHING LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176155 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Xia, Huihao |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Nucl Anal Tech, Shanghai 201800, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 3.Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Zhoutong,Xia, Huihao,Zhou, Xingtai,et al. Raman study of correlation between defects and ferromagnetism in graphite[J]. Journal of physics d-applied physics,2011,44(8):9. |
| APA | He, Zhoutong,Xia, Huihao,Zhou, Xingtai,Yang, Xinmei,Song, You,&Wang, Tianwei.(2011).Raman study of correlation between defects and ferromagnetism in graphite.Journal of physics d-applied physics,44(8),9. |
| MLA | He, Zhoutong,et al."Raman study of correlation between defects and ferromagnetism in graphite".Journal of physics d-applied physics 44.8(2011):9. |
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来源：高能物理研究所
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