Cu-Ni nano-alloy: Mixed, core-shell or Janus nano-particle?

Grégory Guisbiers, Subarna Khanal, Francisco Ruiz-Zepeda, Jorge Roque De La Puente, Miguel José-Yacaman

Research output: Contribution to journalArticlepeer-review

85 Scopus citations


Bimetallic nanoparticles like Cu-Ni are particularly attractive due to their magnetic and catalytic properties; however, their properties depend strongly on the structure of the alloy i.e. mixed, core-shell or Janus. To predict the alloy structure, this paper investigates the size and shape effects as well as the surface segregation effect on the Cu-Ni phase diagram. Phase maps have been plotted to determine the mixing/demixing behavior of this alloy according the particle shape. Cu-Ni nanoalloy can form a mixed particle or a Janus one depending on the synthesis temperature. Surface segregation is also considered and reveals a nickel surface-enrichment. Finally, this paper provides a useful roadmap for experimentalists.

Original languageEnglish (US)
Pages (from-to)14630-14635
Number of pages6
Issue number24
StatePublished - Dec 21 2014
Externally publishedYes

ASJC Scopus subject areas

  • General Materials Science


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