| Self-Assembly of CoPt Magnetic Nanoparticle Arrays and its Underlying Forces | |
| Bian, Baoru1; Chen, Guoxin1; Zheng, Qiang1; Du, Juan1; Lu, Huanming1; Liu, J. Ping2; Hu, Yong3; Zhang, Zhidong4 | |
| Corresponding Author | Du, Juan(dujuan@nimte.ac.cn) ; Lu, Huanming(hmlu@nimte.ac.cn) ; Hu, Yong(huyong@mail.neu.edu.cn) |
| 2018-08-23 | |
| Source Publication | SMALL
 |
| ISSN | 1613-6810 |
| Volume | 14Issue:34Pages:8 |
| Abstract | Nanoparticles covered with surfactants are often used to study particle motion patterns and self-assembly processes in solutions. Surfactants have influence on the interparticle interactions and therefore on the particle motion tracks and final patterns. In this study, CoPt nanoparticles are synthesized in aqueous solution without any surfactant. In situ transmission electron microscopy observation is performed to monitor the self-assemble process. Two types of magnetic nanoparticle superlattice arrays are formed: hexagonal equal distance superlattice arrays when particle size is 3 nm, and tight unequal distance superlattice arrays when particle size is 4.5 nm. It is interesting to observe that two small arrays merge into a large one through rotational and translational movements. A Monte Carlo simulation is carried out which successfully restores the whole process. It is identified that the underlying forces are van der Waals and magnetic dipolar interactions. The latter is responsible for orientation of each particle during the whole process. This investigation leads to a better understanding of the formation mechanism of magnetic nanoparticle superlattice arrays. |
| Keyword | CoPt nanoparticle superlattice driving force in situ TEM self-assembly |
| Funding Organization | National Natural Science Foundation of China ; Natural Science Foundation of Ningbo ; China Scholarship Council |
| DOI | 10.1002/smll.201801184 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51771219] ; National Natural Science Foundation of China[51771220] ; National Natural Science Foundation of China[51771095] ; National Natural Science Foundation of China[51590883] ; National Natural Science Foundation of China[51422106] ; Natural Science Foundation of Ningbo[2017A610030] ; China Scholarship Council[201606085010] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| WOS ID | WOS:000442501500004 |
| Publisher | WILEY-V C H VERLAG GMBH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/129071 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Du, Juan; Lu, Huanming; Hu, Yong |
| Affiliation | 1.Chinese Acad Sci, Key Lab Magnet Mat & Devices, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China 2.Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA 3.Northeastern Univ, Coll Sci, Shenyang 110819, Liaoning, Peoples R China 4.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110011, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Bian, Baoru,Chen, Guoxin,Zheng, Qiang,et al. Self-Assembly of CoPt Magnetic Nanoparticle Arrays and its Underlying Forces[J]. SMALL,2018,14(34):8. |
| APA | Bian, Baoru.,Chen, Guoxin.,Zheng, Qiang.,Du, Juan.,Lu, Huanming.,...&Zhang, Zhidong.(2018).Self-Assembly of CoPt Magnetic Nanoparticle Arrays and its Underlying Forces.SMALL,14(34),8. |
| MLA | Bian, Baoru,et al."Self-Assembly of CoPt Magnetic Nanoparticle Arrays and its Underlying Forces".SMALL 14.34(2018):8. |
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