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Title: Synthesis and morphology control of gold/iron oxide magnetic nanocomposites via a simple aqueous method
Authors: Li, L
Mak, KY
Leung, CW 
Leung, CH
Ruotolo, A
Chan, KY
Chan, WK
Pong, PWT
Issue Date: 2014
Source: IEEE transactions on magnetics, 2014, v. 50, no. 1, 2274457
Abstract: Gold/iron oxide nanocomposites offer the promise of combining the unique traits of both gold and iron oxide nanomaterials to enable new applications. In this work, a simple and safe method has been established whereby the morphology of gold material in gold/iron oxide nanocomposites can be controlled to be nanowire or nanosphere by adjusting the initial molar ratio of citrate-coated iron oxide nanoparticles to auric acid. Gold/iron oxide nanowires and nanospheres were synthesized through thismethod. Their structural, optical, and magnetic properties were characterized by transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), dynamic light scattering (DLS), ultraviolet-visible spectroscopy (UV-Vis), and vibrating sample magnetometry (VSM). These materials substantially maintained the optical properties of gold nanomaterials and magnetic features of iron oxide magnetic nanoparticles.
Keywords: Gold
Iron oxide
Morphology control
Publisher: Institute of Electrical and Electronics Engineers
Journal: IEEE transactions on magnetics 
ISSN: 0018-9464
EISSN: 1941-0069
DOI: 10.1109/TMAG.2013.2274457
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