Low-Temperature Preparation of Superparamagnetic CoFe(2)O(4) Microspheres with High Saturation Magnetization

Based on a low-temperature route, monodispersed CoFe(2)O(4) microspheres (MSs) were fabricated through aggregation of primary nanoparticles. The microstructural and magnetic characteristics of the as-prepared MSs were characterized by X-ray diffraction/photoelectron spectroscopy, scanning/transmitti...

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Detalles Bibliográficos
Autores principales: Yuan, HongLei, Wang, YongQiang, Zhou, ShaoMin, Liu, LiSheng, Chen, XiLiang, Lou, ShiYun, Yuan, RuiJian, Hao, YaoMing, Li, Ning
Formato: Texto
Lenguaje:English
Publicado: Springer 2010
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2964483/
https://www.ncbi.nlm.nih.gov/pubmed/21124634
http://dx.doi.org/10.1007/s11671-010-9718-7
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author Yuan, HongLei
Wang, YongQiang
Zhou, ShaoMin
Liu, LiSheng
Chen, XiLiang
Lou, ShiYun
Yuan, RuiJian
Hao, YaoMing
Li, Ning
author_facet Yuan, HongLei
Wang, YongQiang
Zhou, ShaoMin
Liu, LiSheng
Chen, XiLiang
Lou, ShiYun
Yuan, RuiJian
Hao, YaoMing
Li, Ning
author_sort Yuan, HongLei
collection PubMed
description Based on a low-temperature route, monodispersed CoFe(2)O(4) microspheres (MSs) were fabricated through aggregation of primary nanoparticles. The microstructural and magnetic characteristics of the as-prepared MSs were characterized by X-ray diffraction/photoelectron spectroscopy, scanning/transmitting electron microscopy, and vibrating sample magnetometer. The results indicate that the diameters of CoFe(2)O(4) MSs with narrow size distribution can be tuned from over 200 to ~330 nm. Magnetic measurements reveal these MSs exhibit superparamagnetic behavior at room temperature with high saturation magnetization. Furthermore, the mechanism of formation of the monodispersed CoFe(2)O(4) MSs was discussed on the basis of time-dependent experiments, in which hydrophilic PVP plays a crucial role.
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spelling pubmed-29644832010-11-29 Low-Temperature Preparation of Superparamagnetic CoFe(2)O(4) Microspheres with High Saturation Magnetization Yuan, HongLei Wang, YongQiang Zhou, ShaoMin Liu, LiSheng Chen, XiLiang Lou, ShiYun Yuan, RuiJian Hao, YaoMing Li, Ning Nanoscale Res Lett Nano Express Based on a low-temperature route, monodispersed CoFe(2)O(4) microspheres (MSs) were fabricated through aggregation of primary nanoparticles. The microstructural and magnetic characteristics of the as-prepared MSs were characterized by X-ray diffraction/photoelectron spectroscopy, scanning/transmitting electron microscopy, and vibrating sample magnetometer. The results indicate that the diameters of CoFe(2)O(4) MSs with narrow size distribution can be tuned from over 200 to ~330 nm. Magnetic measurements reveal these MSs exhibit superparamagnetic behavior at room temperature with high saturation magnetization. Furthermore, the mechanism of formation of the monodispersed CoFe(2)O(4) MSs was discussed on the basis of time-dependent experiments, in which hydrophilic PVP plays a crucial role. Springer 2010-08-11 /pmc/articles/PMC2964483/ /pubmed/21124634 http://dx.doi.org/10.1007/s11671-010-9718-7 Text en Copyright © 2010 The Author(s) https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Nano Express
Yuan, HongLei
Wang, YongQiang
Zhou, ShaoMin
Liu, LiSheng
Chen, XiLiang
Lou, ShiYun
Yuan, RuiJian
Hao, YaoMing
Li, Ning
Low-Temperature Preparation of Superparamagnetic CoFe(2)O(4) Microspheres with High Saturation Magnetization
title Low-Temperature Preparation of Superparamagnetic CoFe(2)O(4) Microspheres with High Saturation Magnetization
title_full Low-Temperature Preparation of Superparamagnetic CoFe(2)O(4) Microspheres with High Saturation Magnetization
title_fullStr Low-Temperature Preparation of Superparamagnetic CoFe(2)O(4) Microspheres with High Saturation Magnetization
title_full_unstemmed Low-Temperature Preparation of Superparamagnetic CoFe(2)O(4) Microspheres with High Saturation Magnetization
title_short Low-Temperature Preparation of Superparamagnetic CoFe(2)O(4) Microspheres with High Saturation Magnetization
title_sort low-temperature preparation of superparamagnetic cofe(2)o(4) microspheres with high saturation magnetization
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2964483/
https://www.ncbi.nlm.nih.gov/pubmed/21124634
http://dx.doi.org/10.1007/s11671-010-9718-7
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