We thank the National Creative Research Initiative Program of the Korean Ministry of Science and Technology for the financial support. Wort at Sungkyunkwan University was supported by the BK21 program of the Ministry of Education and the Center for Strongly Correlated Materials Research (CSMR) at Seoul National University.
Large-Scale Synthesis of Uniform and Crystalline Magnetite Nanoparticles Using Reverse Micelles as Nanoreactors under Reflux Conditions†
Article first published online: 4 MAR 2005
Copyright © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Functional Materials
Volume 15, Issue 3, pages 503–509, March, 2005
How to Cite
Lee, Y., Lee, J., Bae, C. J., Park, J.-G., Noh, H.-J., Park, J.-H. and Hyeon, T. (2005), Large-Scale Synthesis of Uniform and Crystalline Magnetite Nanoparticles Using Reverse Micelles as Nanoreactors under Reflux Conditions. Adv. Funct. Mater., 15: 503–509. doi: 10.1002/adfm.200400187
- Issue published online: 4 MAR 2005
- Article first published online: 4 MAR 2005
- Manuscript Accepted: 27 MAY 2004
- Manuscript Received: 1 MAY 2004
Vol. 15, Issue 12, 2036, Article first published online: 24 NOV 2005
- Magnetic materials;
- Nanoparticles, inorganic
We have synthesized uniform and highly crystalline magnetite nanoparticles from the reaction of iron salts in microemulsion nanoreactors. The particle size can be controlled from 2 nm to 10 nm by varying the relative concentrations of the iron salts, surfactant, and solvent. Transmission electron microscope images of the nanoparticles reveal that they are very uniform in size distribution. Structural characterization using X-ray diffraction and X-ray magnetic circular dichroism shows that the nanoparticles are magnetite. The magnetic characterization of the nanoparticles showed that they are superparamagnetic at room temperature. Using a similar synthetic procedure, we have been able to synthesize nanoparticles of several mixed metal ferrites including cobalt ferrite, manganese ferrite, nickel ferrite, and zinc ferrite.