Sub 5 nm Fe3O4 nanocrystals via coprecipitation method

Jun Hua Wu; Seung Pil Ko; Hong Ling Liu; Myung Hwa Jung; Ju Hun Lee; Jae Seon Ju; Young Keun Kim

doi:10.1016/j.colsurfa.2007.04.108

Sub 5 nm Fe₃O₄ nanocrystals via coprecipitation method

Jun Hua Wu, Seung Pil Ko, Hong Ling Liu, Myung Hwa Jung, Ju Hun Lee, Jae Seon Ju, Young Keun Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

Magnetite nanocrystals of 2-4 nm were synthesized by a chemical coprecipitation method, by which the particle size was controlled by the reaction temperature. The nanocrystals were investigated by XRD, TEM/HRTEM, VSM and SQUID. It is found that the nanocrystals reveal well-defined superparamagnetic behavior before and after annealing, while the observation of the distinct lattices manifest the high crystallinity of the ultrasmall particles.

Original language	English
Pages (from-to)	268-272
Number of pages	5
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	313-314
DOIs	https://doi.org/10.1016/j.colsurfa.2007.04.108
Publication status	Published - 2008 Feb 1

Keywords

Magnetic
Magnetite
Nanocrystals
Superparamagnetic

ASJC Scopus subject areas

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

Access to Document

10.1016/j.colsurfa.2007.04.108

Cite this

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title = "Sub 5 nm Fe3O4 nanocrystals via coprecipitation method",

abstract = "Magnetite nanocrystals of 2-4 nm were synthesized by a chemical coprecipitation method, by which the particle size was controlled by the reaction temperature. The nanocrystals were investigated by XRD, TEM/HRTEM, VSM and SQUID. It is found that the nanocrystals reveal well-defined superparamagnetic behavior before and after annealing, while the observation of the distinct lattices manifest the high crystallinity of the ultrasmall particles.",

keywords = "Magnetic, Magnetite, Nanocrystals, Superparamagnetic",

author = "Wu, {Jun Hua} and Ko, {Seung Pil} and Liu, {Hong Ling} and Jung, {Myung Hwa} and Lee, {Ju Hun} and Ju, {Jae Seon} and Kim, {Young Keun}",

note = "Funding Information: This work was supported by the Korea Research Foundation Grants KRF-2005-210-D00023 and KRF-2004-005-D00057, by the Grant A050750 of the Korea Health 21 R&D Project, Ministry of Health & Welfare, and by the Korea Science and Engineering Foundation through the National Research Laboratory Program funded by the Ministry of Science and Technology (No. M10500000105-05J0000-10510).",

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doi = "10.1016/j.colsurfa.2007.04.108",

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T1 - Sub 5 nm Fe3O4 nanocrystals via coprecipitation method

AU - Wu, Jun Hua

AU - Ko, Seung Pil

AU - Liu, Hong Ling

AU - Jung, Myung Hwa

AU - Lee, Ju Hun

AU - Ju, Jae Seon

AU - Kim, Young Keun

N1 - Funding Information: This work was supported by the Korea Research Foundation Grants KRF-2005-210-D00023 and KRF-2004-005-D00057, by the Grant A050750 of the Korea Health 21 R&D Project, Ministry of Health & Welfare, and by the Korea Science and Engineering Foundation through the National Research Laboratory Program funded by the Ministry of Science and Technology (No. M10500000105-05J0000-10510).

PY - 2008/2/1

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N2 - Magnetite nanocrystals of 2-4 nm were synthesized by a chemical coprecipitation method, by which the particle size was controlled by the reaction temperature. The nanocrystals were investigated by XRD, TEM/HRTEM, VSM and SQUID. It is found that the nanocrystals reveal well-defined superparamagnetic behavior before and after annealing, while the observation of the distinct lattices manifest the high crystallinity of the ultrasmall particles.

AB - Magnetite nanocrystals of 2-4 nm were synthesized by a chemical coprecipitation method, by which the particle size was controlled by the reaction temperature. The nanocrystals were investigated by XRD, TEM/HRTEM, VSM and SQUID. It is found that the nanocrystals reveal well-defined superparamagnetic behavior before and after annealing, while the observation of the distinct lattices manifest the high crystallinity of the ultrasmall particles.

KW - Magnetic

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KW - Nanocrystals

KW - Superparamagnetic

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