Integrated experimental and modeling study of ionic conductivity of scandia-stabilized zirconia thin films

Z. Q. Yu, R. Devanathan, W. Jiang, P. Nachimuthu, V. Shutthanandan, L. Saraf, C. M. Wang, S. V N T Kuchibhatla, S. Thevuthasan

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Scandia-stabilized zirconia films were epitaxially grown on sapphire (0001) substrates by oxygen-plasma-assisted molecular beam epitaxy. The cubic phase was found to exist over a wider dopant concentration range than previously observed (4.6-17.6 mol.% Sc2O3). The monoclinic phase was observed for dopant concentrations of 1.5 mol.% and 22.5 mol.%. An increase in the fraction of the monoclinic phase relative to the cubic phase decreased the ionic conductivity. The highest conductivity in the temperature range of 460-900 °C was observed for 9.9 mol.% Sc2O3. Atomistic computer simulations show that the observed composition dependence can be related to changes in migration barriers for O2- ion transport with Sc3+ substitution of Zr4+ ions.

Original languageEnglish
Pages (from-to)367-371
Number of pages5
JournalSolid State Ionics
Volume181
Issue number8-10
DOIs
Publication statusPublished - 29 Mar 2010
Externally publishedYes

Fingerprint

Scandium
scandium
Ionic conductivity
zirconium oxides
Zirconia
ion currents
Doping (additives)
Ions
Thin films
Aluminum Oxide
oxygen plasma
thin films
Molecular beam epitaxy
Sapphire
ions
sapphire
Substitution reactions
molecular beam epitaxy
computerized simulation
substitutes

Keywords

  • Atomistic simulation
  • Ionic conductivity
  • MBE
  • RBS
  • Sc doping
  • TEM
  • XRD
  • ZrO thin films

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Chemistry(all)

Cite this

Yu, Z. Q., Devanathan, R., Jiang, W., Nachimuthu, P., Shutthanandan, V., Saraf, L., ... Thevuthasan, S. (2010). Integrated experimental and modeling study of ionic conductivity of scandia-stabilized zirconia thin films. Solid State Ionics, 181(8-10), 367-371. https://doi.org/10.1016/j.ssi.2010.01.024

Integrated experimental and modeling study of ionic conductivity of scandia-stabilized zirconia thin films. / Yu, Z. Q.; Devanathan, R.; Jiang, W.; Nachimuthu, P.; Shutthanandan, V.; Saraf, L.; Wang, C. M.; Kuchibhatla, S. V N T; Thevuthasan, S.

In: Solid State Ionics, Vol. 181, No. 8-10, 29.03.2010, p. 367-371.

Research output: Contribution to journalArticle

Yu, ZQ, Devanathan, R, Jiang, W, Nachimuthu, P, Shutthanandan, V, Saraf, L, Wang, CM, Kuchibhatla, SVNT & Thevuthasan, S 2010, 'Integrated experimental and modeling study of ionic conductivity of scandia-stabilized zirconia thin films', Solid State Ionics, vol. 181, no. 8-10, pp. 367-371. https://doi.org/10.1016/j.ssi.2010.01.024
Yu ZQ, Devanathan R, Jiang W, Nachimuthu P, Shutthanandan V, Saraf L et al. Integrated experimental and modeling study of ionic conductivity of scandia-stabilized zirconia thin films. Solid State Ionics. 2010 Mar 29;181(8-10):367-371. https://doi.org/10.1016/j.ssi.2010.01.024
Yu, Z. Q. ; Devanathan, R. ; Jiang, W. ; Nachimuthu, P. ; Shutthanandan, V. ; Saraf, L. ; Wang, C. M. ; Kuchibhatla, S. V N T ; Thevuthasan, S. / Integrated experimental and modeling study of ionic conductivity of scandia-stabilized zirconia thin films. In: Solid State Ionics. 2010 ; Vol. 181, No. 8-10. pp. 367-371.
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