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'Madelung model' prediction for dependence of lattice parameter on nanocrystal size

  • Columbia University

Research output: Contribution to journalArticlepeer-review

130 Scopus citations

Abstract

The competition between the long-range Coulomb attractive and the short-range repulsive interaction in ionic nanocrystals creates an effective negative pressure, which causes the lattice parameter a to increase with decreasing nanoparticle size d. A simple 'Madelung model' is used to predict the dependence of the lattice parameter for CeO2 and BaTiO3 on d, δa/a = α/d, for α = 0.22 and 0.18 Å, respectively. The model predictions are compared with experimental results.

Original languageEnglish
Pages (from-to)295-297
Number of pages3
JournalSolid State Communications
Volume123
Issue number6-7
DOIs
StatePublished - Aug 2002

Keywords

  • A. Nanostructures
  • A. Surfaces and interfaces

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