Rise and fall of ferromagnetism in o-irradiated al2o3 single crystals
文献类型：期刊论文
| 作者 | Li, Qiang1,2; Xu, Juping1; Liu, Jiandang1; Du, Huaijiang1; Ye, Bangjiao1 |
| 刊名 | Journal of applied physics
 |
| 出版日期 | 2015-06-21 |
| 卷号 | 117期号:23页码:5 |
| ISSN号 | 0021-8979 |
| DOI | 10.1063/1.4922788 |
| 英文摘要 | In dilute magnetic semiconductors studies, sapphire was usually used as non-magnetic substrate for films. we observed weak ferromagnetic component in al2o3 single crystal substrate, and excluded the possibility of ferromagnetic contaminations carefully by inductively coupled plasma mass spectrometry and x-ray photoelectron spectroscopy. the ferromagnetism rise and fall during the process of annealing-oxygen irradiation-annealing of the sapphire. the ferromagnetic changes are consistent with al-vacancy related defects detected by positron annihilation spectroscopy. with first-principle calculations, we confirm that al-vacancy can introduce magnetic moment for 3 mu b in al2o3 crystal and form stable v-al-v-al ferromagnetic coupling at room temperature. (c) 2015 aip publishing llc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000356619300009 |
| 出版者 | AMER INST PHYSICS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/1639617 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Li, Qiang |
| 作者单位 | 1.Univ Sci & Technol China, State Key Lab Particle Detect & Elect, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, China Spallat Neutron Source, Dongguan 523803, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Qiang,Xu, Juping,Liu, Jiandang,et al. Rise and fall of ferromagnetism in o-irradiated al2o3 single crystals[J]. Journal of applied physics,2015,117(23):5. |
| APA | Li, Qiang,Xu, Juping,Liu, Jiandang,Du, Huaijiang,&Ye, Bangjiao.(2015).Rise and fall of ferromagnetism in o-irradiated al2o3 single crystals.Journal of applied physics,117(23),5. |
| MLA | Li, Qiang,et al."Rise and fall of ferromagnetism in o-irradiated al2o3 single crystals".Journal of applied physics 117.23(2015):5. |
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