Raman scattering and magnetizations studies of (Al, Cr)-codoped 4H-SiC
文献类型：期刊论文
| 作者 | Song, B ; Chen, XL ; Han, JC ; Wang, G ; Bao, HQ ; Duan, LB ; Zhu, KX ; Li, H ; Zhang, ZH ; Wang, WY ; Wang, WJ ; Zhang, XH ; Meng, SH |
| 刊名 | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
 |
| 出版日期 | 2011 |
| 卷号 | 323期号:22页码:2876 |
| 关键词 | HIGH-TEMPERATURE FERROMAGNETISM 6H-SIC SINGLE-CRYSTALS MAGNETIC-PROPERTIES DOPED ALN SILICON-CARBIDE ZINC-OXIDE THIN-FILMS MN GROWTH SEMICONDUCTORS |
| ISSN号 | 0304-8853 |
| 通讯作者 | Song, B (reprint author), Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150080, Peoples R China. |
| 中文摘要 | In this study, the insertion of both Al and Cr atoms into SiC matrix has been experimentally evidenced by X-ray diffraction, Raman scattering, elements analysis and magnetic measurements. Structure analysis showed that (Al, Cr)-codoped SiC has a single-phase 4H-crystal structure and no trace of any other impurity phases were detected. Raman scattering showed that several new features appeared in (Al, Cr)-codoped 4H-SiC: (1) the vanishing of the folded longitudinal-optical phonons modes-plasmon coupling (FLOPC) modes with x=(q/q(B))=0; (2) an obvious absorbing peak was found in Si(1-x-y)Al(x)Cr(y)C with y=0.0203 at%; (3) folded transverse-optical (FTO) mode shifts to high frequency and linewidths [full widths at half maximum (FWHM)] decrease with increase in Cr content. Magnetic properties characterizations showed that weak ferromagnetism order is established. With increase in Cr content, the magnetization decreased. No clear influence of Al doping on the magnetic properties of codoped 4H-SiC is evidenced while the magnetic origin should be ascribed to be induced by Cr. It is speculated that doping Cr elements at Si sites destroy the effective coupling of the spins induced by Al doping. The major role of Al is to stabilize the codoped crystal structure as 4H-single-phase. (C) 2011 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [50902037, 50902014]; Fundamental Research Funds for the Central University [HIT.ICRST 2010 008]; Ludo Frevel Crystallography Scholarship Award; China Postdoctoral Science Foundation [20090451008]; Harbin Institute of Technology (HIT) [HITQNJS.2009.065]; Research Foundation for Young Innovation Talents of Science and Technology in Harbin City [2010RFQXG018] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51828]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Song, B,Chen, XL,Han, JC,et al. Raman scattering and magnetizations studies of (Al, Cr)-codoped 4H-SiC[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2011,323(22):2876. |
| APA | Song, B.,Chen, XL.,Han, JC.,Wang, G.,Bao, HQ.,...&Meng, SH.(2011).Raman scattering and magnetizations studies of (Al, Cr)-codoped 4H-SiC.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,323(22),2876. |
| MLA | Song, B,et al."Raman scattering and magnetizations studies of (Al, Cr)-codoped 4H-SiC".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 323.22(2011):2876. |
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来源：物理研究所
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