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Nanomagnetism study of highly-ordered iron oxide nanocrystal assemblies fabricated by the Langmuir-Blodgett technique
Zhang, HaiTao1,2; Bao, NiNa2; Yuan, Du2; Ding, Jun2
2013
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume15Issue:35Pages:14689-14695
AbstractIron oxide nanocrystals are ideal building blocks for the construction of flexible nanodevices whose performance can be modulated by controlling the morphology of isolated particles and their organizational form. This work demonstrates the fabrication of high quality Langmuir-Blodgett (LB) nanocrystal assemblies with limited overlapping and higher coverage by systemically and combinatorially optimizing the parameters of compression pressure and quantity of spread nanocrystals. Monodispersed iron oxide nanocrystals with a diameter of 11.8 nm were synthesized by thermal decomposition of Fe(CO)(5) in trioctylamine with the presence of oleic acid. Multilayer nanocrystal assemblies were obtained through a layer-by-layer (LBL) process by repeating the transfer procedure after their hydrophilicity had been improved via treatment in a UV-ozone oven. The quality of nanocrystal assemblies was investigated by UV-vis spectrometry and scanning electron microscopy. The nanomagnetism for the nanostructures of different combination manners was studied systemically by a superconducting quantum interference device (SQUID). A lower superparamagnetic blocking temperature was found in the monolayer Fe3O4 nanocrystal assembly. The superparamagnetic blocking temperature in magnetic nanocrystal assemblies could be tuned through modifying the interparticle interactions among the interlayer and intralayers by controlling the layer number of the assemblies.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordNANOPARTICLE ASSEMBLIES ; MAGNETIC NANOPARTICLES ; FILMS ; MONOLAYER ; SUPERLATTICES ; TRANSITION ; CO
WOS Research AreaChemistry ; Physics
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS IDWOS:000323196800015
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13680
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Grp Ion Liquids Clean Proc & Energy Saving, Beijing 100190, Peoples R China
2.Natl Univ Singapore, Fac Engn, Dept Mat Sci & Engn, Singapore 117574, Singapore
Recommended Citation
GB/T 7714
Zhang, HaiTao,Bao, NiNa,Yuan, Du,et al. Nanomagnetism study of highly-ordered iron oxide nanocrystal assemblies fabricated by the Langmuir-Blodgett technique[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2013,15(35):14689-14695.
APA Zhang, HaiTao,Bao, NiNa,Yuan, Du,&Ding, Jun.(2013).Nanomagnetism study of highly-ordered iron oxide nanocrystal assemblies fabricated by the Langmuir-Blodgett technique.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,15(35),14689-14695.
MLA Zhang, HaiTao,et al."Nanomagnetism study of highly-ordered iron oxide nanocrystal assemblies fabricated by the Langmuir-Blodgett technique".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 15.35(2013):14689-14695.
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