Ferromagnetic cobalt nanodots, nanorices, nanowires and nanoflowers by polyol process

Various shapes and sizes of colloidal Co nanoparticles were fabricated by the polyol process using Co(acac)(3), 1,2-hexadecanediol, oleylamine, and oleic acid within octylether. The rice-shaped Co nanoparticles with size of 30 nm and aspect ratio of 1.8 can be fabricated into a self-assembled form without assistance of surfactants. The addition of oleylamine as surfactant decreased the particle size and aspect ratio, and the addition of oleic acid made the surface of particle faceted without decreasing particle size from that of rice shape. The mixture of oleylamine and oleic acid produce differently shaped Co nanoparticles, including nanoprism, nanowire, and nanoflower according to the ratio of components, total amount of surfactant mixture, and reaction time. The fabricated nanoparticles showed ferromagnetic properties. These results showed that the various size and shape of metallic nanoparticles can be fabricated by the polyol process into controlled forms.
Publisher
MATERIALS RESEARCH SOC
Issue Date
2005-08
Language
ENG
Keywords

SHAPE-CONTROL; INORGANIC NANOCRYSTALS; PARTICLES; NANOPARTICLES; CO; GROWTH

Citation

JOURNAL OF MATERIALS RESEARCH, v.20, pp.2148 - 2153

Series/Report no.
20 (8); pp. 2148-2153
ISSN
0884-2914
DOI
10.1557/JMR.2005.0267
URI
http://hdl.handle.net/10203/1421
Appears in Collection
MS-Journal Papers(저널논문)
Files in This Item
88.pdf(3.34 MB)Download
  • Hit : 542
  • Download : 1381
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button
⊙ Cited 36 items in WoSClick to see citing articles inrecords_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0