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

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

68 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

Bibliographical 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).

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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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.

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