Spin canting and spin-flop transition in antiferromagnetic Cr2O3 nanocrystals
文献类型：期刊论文
| 作者 | Li, D.1,3; Han, Z.1,3; Zheng, J. G.2; Wang, X. L.1,3; Geng, D. Y.1,3; Li, J.1,3; Zhang, Z. D.1,3 |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2009-09-01 |
| 卷号 | 106期号:5页码:5 |
| 关键词 | antiferromagnetic materials chromium chromium compounds magnetic annealing magnetic structure magnetic transitions magnetisation nanostructured materials Neel temperature |
| ISSN号 | 0021-8979 |
| DOI | 10.1063/1.3213100 |
| 通讯作者 | Li, D.(dali@imr.ac.cn) |
| 英文摘要 | The structure and magnetic properties of Cr2O3 and Cr nanoparticles have been investigated. The as-prepared Cr nanoparticles show a core/shell structure, consisting of a Cr core and a thin Cr oxide shell with a thickness of 1.5-2.5 nm. Annealing the Cr nanoparticles in air leads to the formation of Cr2O3 nanoparticles with spherical morphology. The temperature dependence of the magnetization indicates that these Cr2O3 nanocrystals are antiferromagnetic below their Neacuteel temperature of 320 K and undergo an antiferromagnetic to weak-ferromagnetic transition below about 140 K due to spin canting at disordered surfaces. Below 100 K, a spin-flop transition is induced by an external field with a critical field lower than about 7 T. |
| 资助项目 | National Natural Science Foundation of China[50831006] ; National Natural Science Foundation of China[50331030] ; National Natural Science Foundation of China[50701045] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000269850300082 |
| 出版者 | AMER INST PHYSICS |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/97732]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li, D. |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Calif Irvine, Calif Inst Telecommun & Informat Technol, Ctr Mat Characterizat, LEXI, Irvine, CA 92697 USA 3.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, D.,Han, Z.,Zheng, J. G.,et al. Spin canting and spin-flop transition in antiferromagnetic Cr2O3 nanocrystals[J]. JOURNAL OF APPLIED PHYSICS,2009,106(5):5. |
| APA | Li, D..,Han, Z..,Zheng, J. G..,Wang, X. L..,Geng, D. Y..,...&Zhang, Z. D..(2009).Spin canting and spin-flop transition in antiferromagnetic Cr2O3 nanocrystals.JOURNAL OF APPLIED PHYSICS,106(5),5. |
| MLA | Li, D.,et al."Spin canting and spin-flop transition in antiferromagnetic Cr2O3 nanocrystals".JOURNAL OF APPLIED PHYSICS 106.5(2009):5. |
入库方式： OAI收割
来源：金属研究所
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