Abstract
Core/shell structured iron(Fe)/gold(Au) nanoparticles have been prepared by a reverse micelle method, and their potential application as magnetic resonance (MR) contrast agent investigated. The average nanoparticle size is 19 nm, as determined by x-ray powder diffraction (XRD) and transmission electron microscopy (TEM). Magnetic properties and relaxivities of nanoparticles are presented and compared. The saturation magnetization is 81 emu g-1 Fe for freshly prepared nanoparticles and the particles have high r 1(6.87 mM-1 s-1) when the Fe core is kept from oxidation. These nanoparticles may be used as T1 agents in the unoxidized form.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 640-644 |
| Number of pages | 5 |
| Journal | Nanotechnology |
| Volume | 17 |
| Issue number | 3 |
| DOIs | |
| State | Published - Feb 14 2006 |
ASJC Scopus subject areas
- Engineering (miscellaneous)
- Materials Science(all)
- Physics and Astronomy (miscellaneous)
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Cho, S. J., Jarrett, B. R., Louie, A. Y., & Kauzlarich, S. M. (2006). Gold-coated iron nanoparticles: A novel magnetic resonance agent for T 1 and T2 weighted imaging. Nanotechnology, 17(3), 640-644. https://doi.org/10.1088/0957-4484/17/3/004