Synthesis and structural characterization of ferromagnetic Au/Co nanoparticles

Nabraj Bhattarai, Subarna Khanal, Daniel Bahena, Robert L. Whetten, Miguel Jose-Yacaman

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


The synthesis of bimetallic magnetic nanoparticles is very challenging because of the agglomeration and non-uniform size. In this paper, we present the synthesis of monodispersed 3-5 nm sized thiolated bimetallic alloyed Au/Co nanoparticles with decahedral and icosahedral shape, their characterization using Cs-corrected scanning transmission electron microscopy (STEM) and magnetic measurements using superconducting quantum interference device (SQUID) magnetometer. The Z-contrast imaging and energy dispersive X-ray spectroscopy (EDS) mapping showed an inhomogeneous alloying with minor segregation between Au and Co at nanoscale and the SQUID measurement exhibited the ferromagnetic behavior.

Original languageEnglish (US)
JournalMaterials Research Society Symposium Proceedings
StatePublished - 2014
Externally publishedYes
Event2014 MRS Spring Meeting - San Francisco, United States
Duration: Apr 21 2014Apr 25 2014


  • ferromagnetic
  • magnetic properties
  • scanning transmission electron microscopy (STEM)

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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