Temperature-dependent formation and shrinkage of hollow shells in hemispherical Ag/Pd nanoparticles

Gyrgyi Glodán, Csaba Cserháti, Dezs L. Beke

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

It is shown that both the growth and shrinkage of hollow shells in Ag/Pd hemispherical core-shell nanostructures take place at the same temperature. The crossover time, t cr, between these regimes is shifted to lower values with increasing temperature. This result confirms that the growth and shrinkage regimes are controlled by the faster and slower diffusion coefficients (D Ag and Ds Pd), respectively. The pore radius, confirming recent theoretical predictions, linearly depends on the initial particle radius, and the slope of this straight line increases with the average composition of the faster component.

Original languageEnglish
Pages (from-to)3806-3812
Number of pages7
JournalPhilosophical Magazine
Volume92
Issue number31
DOIs
Publication statusPublished - Nov 1 2012

Keywords

  • Kirkendall effect
  • hollow nanostructures
  • interdiffusion
  • stability

ASJC Scopus subject areas

  • Condensed Matter Physics

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