Nanomagnetism study of highly-ordered iron oxide nanocrystal assemblies fabricated by the Langmuir-Blodgett technique

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	Nanomagnetism study of highly-ordered iron oxide nanocrystal assemblies fabricated by the Langmuir-Blodgett technique
	Zhang, HaiTao 1,2; Bao, NiNa 2; Yuan, Du 2; Ding, Jun 2
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2013
卷号	15 期号:35 页码:14689-14695
英文摘要	Iron 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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Chemistry ; Physics
关键词[WOS]	NANOPARTICLE ASSEMBLIES ; MAGNETIC NANOPARTICLES ; FILMS ; MONOLAYER ; SUPERLATTICES ; TRANSITION ; CO
收录类别	SCI
语种	英语
WOS记录号	WOS:000323196800015
公开日期	2015-05-27
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/13680]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.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
推荐引用方式 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.