PMID: 11328094May 1, 2001Paper

Nonstoichiometry and the electrical activity of grain boundaries in SrTiO3

Physical Review Letters
M KimStephen J Pennycook

Abstract

A combination of experiments and first-principles calculations is used to show that grain boundaries in SrTiO3 are intrinsically nonstoichiometric. Total-energy calculations reveal that the introduction of nonstoichiometry into the grain boundaries is energetically favorable and results in structures that are consistent with atomic-resolution Z-contrast micrographs. Electron energy-loss spectra provide direct evidence of nonstoichiometry. These results and calculations for nonstoichiometric grain boundaries provide an explanation of the microscopic origin of the "double Schottky barriers" that dominate the electrical behavior of polycrystalline oxides.

References

Mar 1, 1996·Physical Review. B, Condensed Matter·J PadillaD Vanderbilt
Apr 15, 1990·Physical Review. B, Condensed Matter·D Vanderbilt
Apr 15, 1993·Physical Review. B, Condensed Matter· Van de Walle CGS T Pantelides
Oct 7, 1994·Science·M M McGibbonV P Dravid

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Citations

Apr 9, 2005·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Andrew R LupiniStephen J Pennycook
Jan 4, 2008·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Robert F KlieYimei Zhu
Apr 6, 2011·ACS Applied Materials & Interfaces·D Ávila-BrandeM Luysberg
Jan 23, 2009·Journal of Electron Microscopy·Stephen J PennycookMatthew F Chisholm
Mar 9, 2017·Micron : the International Research and Review Journal for Microscopy·Kepeng SongHengqiang Ye
Dec 18, 2007·Micron : the International Research and Review Journal for Microscopy·Robert F KlieYimei Zhu
Apr 20, 2004·Physical Review Letters·M VarelaS J Pennycook
Oct 30, 2009·Physical Chemistry Chemical Physics : PCCP·Roger A De Souza
Sep 28, 2010·Physical Review Letters·Michael HafemeisterSascha Sadewasser
Jan 28, 2012·Advanced Materials·Won-Mo LeeMoon-Ho Jo
Jun 24, 2014·Physical Chemistry Chemical Physics : PCCP·Bin LiuWilliam J Weber
Aug 7, 2012·Physical Chemistry Chemical Physics : PCCP·Jonathan M PolfusReidar Haugsrud
Jul 14, 2018·Physical Review Letters·Peng GaoYuichi Ikuhara
Oct 28, 2010·Nano Letters·Hajime HojoYuichi Ikuhara
Jan 11, 2018·The Journal of Physical Chemistry Letters·Michael E FosterA Alec Talin

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