Evidence of Surface-Preferential Co Distribution in ZnO Nanocrystal and Its Effects on the Ferromagnetic Property
文献类型：期刊论文
| 作者 | Hao, WC; Li, JJ ; Xu, HZ; Wang, JO; Wang, TM; Wang JO(王嘉鸥)
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| 刊名 | ACS APPLIED MATERIALS & INTERFACES
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| 出版日期 | 2010 |
| 卷号 | 2期号:7页码:2053-2059 |
| 关键词 | surface-preferential distribution ZnO ferromagnetic property postannealing |
| 通讯作者 | [Hao, Weichang ; Li, Jianjun ; Wang, Tianmin] Beihang Univ, Ctr Mat Phys & Chem, Beijing 100191, Peoples R China ; [Xu, Huaizhe] Beihang Univ, Dept Phys, Beijing 100191, Peoples R China ; [Wang, Jiaou] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China |
| 英文摘要 | Zn(0.95)Co(0.05)O nanocrystals were synthesized by the sol-gel method. A STEM image clearly shows that the Co in ZnO nanocrystals is of surface-preferential. To further study the distribution state of Co element and its effects on the structure and magnetic property, were postannealed the Zn(0.95)Co(0.05)O nanocrystals in O(2), Ar, and H(2) atmospheres. It is found that the ferromagnetisms of the H(2)- and Ar-annealed Zn(0.95)Co(0.05)O nandcrystals increase significantly, but that of the O(2)-annealed sample decreases. The ferromagnetism variations of the Ar- and O(2)-annealed sample are stemmed from the increase of oxygen vacancies (V(0)) and the formation of second-phase Co(3)O(4), respectively, whereas the great enhancement of ferromagnetism in the H(2)-annealed sample is attributed to the appearance of interstitial H (H(1)) related defects. Our results indicate that inhomogeneous Co distribution is helpful for manipulating the states of the Co ions and the ferromagnetic coupling In Zn(1-x)Co(x)O by post-treatment. |
| 学科主题 | Science & Technology - Other Topics; Materials Science |
| 类目[WOS] | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Science & Technology - Other Topics ; Materials Science |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000280367000040 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/239635]  |
| 专题 | 中国科学院高能物理研究所_中国散裂中子源 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Hao, WC,Li, JJ,Xu, HZ,et al. Evidence of Surface-Preferential Co Distribution in ZnO Nanocrystal and Its Effects on the Ferromagnetic Property[J]. ACS APPLIED MATERIALS & INTERFACES,2010,2(7):2053-2059. |
| APA | Hao, WC,Li, JJ,Xu, HZ,Wang, JO,Wang, TM,&王嘉鸥.(2010).Evidence of Surface-Preferential Co Distribution in ZnO Nanocrystal and Its Effects on the Ferromagnetic Property.ACS APPLIED MATERIALS & INTERFACES,2(7),2053-2059. |
| MLA | Hao, WC,et al."Evidence of Surface-Preferential Co Distribution in ZnO Nanocrystal and Its Effects on the Ferromagnetic Property".ACS APPLIED MATERIALS & INTERFACES 2.7(2010):2053-2059. |
入库方式： OAI收割
来源：高能物理研究所
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