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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 AuthorDu, Juan(dujuan@nimte.ac.cn) ; Lu, Huanming(hmlu@nimte.ac.cn) ; Hu, Yong(huyong@mail.neu.edu.cn)
2018-08-23
Source PublicationSMALL
ISSN1613-6810
Volume14Issue:34Pages:8
AbstractNanoparticles 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.
KeywordCoPt nanoparticle superlattice driving force in situ TEM self-assembly
Funding OrganizationNational Natural Science Foundation of China ; Natural Science Foundation of Ningbo ; China Scholarship Council
DOI10.1002/smll.201801184
Indexed BySCI
Language英语
Funding ProjectNational 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 AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000442501500004
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129074
Collection中国科学院金属研究所
Corresponding AuthorDu, Juan; Lu, Huanming; Hu, Yong
Affiliation1.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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