Crystallite size dependency of thermal expansion in ceria nanoparticles

Philip P. Rodenbough, Mikhail Lipatov, Siu Wai Chan

Research output: Contribution to journalArticle

Abstract

We have carefully measured the thermal expansion for ceria nanoparticles across a wide range of crystallite sizes. Such an experiment probing the crystallite size dependency of thermal expansion has virtually no precedence. We found that as crystallite size decreases, the coefficient of thermal expansion decreases as well. We are able to calculate from the expansions the relative contributions of surface adsorbents and surface non-stoichiometry to surface stress. We find that smaller nanoparticles owe more of their surface stress to surface non-stoichiometry.

Original languageEnglish (US)
Pages (from-to)311-316
Number of pages6
JournalMaterials Chemistry and Physics
Volume192
DOIs
StatePublished - May 1 2017

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Cerium compounds
Crystallite size
Thermal expansion
thermal expansion
Nanoparticles
nanoparticles
adsorbents
Adsorbents
expansion
coefficients
Experiments

Keywords

  • Ceria
  • Lattice parameter
  • Nanoparticles
  • Thermal expansion

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Crystallite size dependency of thermal expansion in ceria nanoparticles. / Rodenbough, Philip P.; Lipatov, Mikhail; Chan, Siu Wai.

In: Materials Chemistry and Physics, Vol. 192, 01.05.2017, p. 311-316.

Research output: Contribution to journalArticle

Rodenbough, Philip P. ; Lipatov, Mikhail ; Chan, Siu Wai. / Crystallite size dependency of thermal expansion in ceria nanoparticles. In: Materials Chemistry and Physics. 2017 ; Vol. 192. pp. 311-316.
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