Sub 5 nm Fe3O4 nanocrystals via coprecipitation method

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

doi:10.1016/j.colsurfa.2007.04.108

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Sub 5 nm Fe3O4 nanocrystals via coprecipitation method

Wu, Jun Hua;
Ko, Seung Pil;
Liu, Hong Ling;
Jung, Myung-Hwa;
Lee, Ju Hun;
... Kim, Young Keun;
외 1명

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초록

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. (C) 2007 Elsevier B.V. All rights reserved.

키워드

nanocrystals; magnetite; magnetic; superparamagnetic; SIZE-CONTROLLED SYNTHESIS; MAGNETITE NANOPARTICLES; PARTICLES; SUPERLATTICES; BIOMEDICINE

제목: Sub 5 nm Fe3O4 nanocrystals via coprecipitation method

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

DOI: 10.1016/j.colsurfa.2007.04.108

발행일: 2008-02-01

유형: Article; Proceedings Paper

저널명: Colloids and Surfaces A: Physicochemical and Engineering Aspects

권: 313

페이지: 268 ~ 272