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Determination of grain boundary potentials in ceramics: Combining impedance spectroscopy and inline electron holography

Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 101 Issue 1

Abstract

The electrostatic potential arising from charge bound at grain boundary cores in ceramics and the accumulation of space charge in their vicinity is in many cases made responsible for the ion blocking or conducting behavior of electroceramics. While interpretation of impedance spectra of nominally undoped and acceptor doped SrTiO3 ceramics and bicrystals implies that grain boundaries are positively charged and accompanied by fairly wide regions of negative space charge on both sides, a critical analysis of electron holography data available in the literature yields very narrow potential profiles of the opposite sign. This paper attempts to reconcile this apparent discrepancy by showing that within the Mott–Schottky model, impedance data which implies space charge dominated grain boundary resistivity must be interpreted in terms of even wider space charge regions than generally assumed. A review of electron holography results from grain boundaries in SrTiO3 is extended by new results which were obtained by a novel inline electron holography reconstruction algorithm at a near Σ13 grain boundary in nominally undoped SrTiO3. This work is dedicated to the memory of Prof. Rowland M. Cannon.

Keywords: Space charge; Inline electron holography; Impedance spectroscopy
* Correspondence address Dr. Christoph T. Koch, Max-Planck-Institut für Metallforschung, Heisenbergstr. 3, 70569 Stuttgart, Germany. Tel.: +49 711 689 3647, Fax: +49 711 689 3522, E-mail:

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Received: 2009-3-13
Accepted: 2009-10-28
Published Online: 2013-06-11
Published in Print: 2010-01-01

© 2010, Carl Hanser Verlag, München

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  9. Applications of aberration corrected scanning transmission electron microscopy and electron energy loss spectroscopy to thin oxide films and interfaces
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  11. Determination of grain boundary potentials in ceramics: Combining impedance spectroscopy and inline electron holography
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  13. Theoretical study on the structure and energetics of intergranular glassy film in Si3N4-SiO2 ceramics
  14. Inter-granular glassy phases in the low-CaO-doped HIPed Si3N4 ceramics: a review
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  18. A new method to measure monoclinic depth profile in zirconia-based ceramics from X-ray diffraction data
  19. The role of Si impurities in the transient dopant segregation and precipitation in yttrium-doped alumina
  20. Using microfabricated devices to determine the fracture strength of materials
  21. Spark plasma sintering of self-doped alumina powders
  22. High density carbon materials obtained at relatively low temperature by spark plasma sintering of carbon nanofibers
  23. Application of new forming and sintering techniques to obtain hydroxyapatite and β-TCP nanostructured composites
  24. Silver-hydroxyapatite nanocomposites as bactericidal and fungicidal materials
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https://doi.org/10.3139/146.110241
Keywords for this article
Space charge; Inline electron holography; Impedance spectroscopy

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. The 7th International Workshop on Interfaces: New Materials via Interfacial Control
  6. Basic
  7. First principles based predictions of the toughness of a metal/oxide interface
  8. The role of interfaces in the behavior of magnetic tunnel junction structures
  9. Applications of aberration corrected scanning transmission electron microscopy and electron energy loss spectroscopy to thin oxide films and interfaces
  10. Van der Waals-London dispersion interaction framework for experimentally realistic carbon nanotube systems
  11. Determination of grain boundary potentials in ceramics: Combining impedance spectroscopy and inline electron holography
  12. Grain boundary plane distributions in aluminas evolving by normal and abnormal grain growth and displaying different complexions
  13. Theoretical study on the structure and energetics of intergranular glassy film in Si3N4-SiO2 ceramics
  14. Inter-granular glassy phases in the low-CaO-doped HIPed Si3N4 ceramics: a review
  15. Applied
  16. Sintering of fully faceted crystalline particles
  17. Grain growth kinetics and segregation in yttria tetragonal zirconia polycrystals
  18. A new method to measure monoclinic depth profile in zirconia-based ceramics from X-ray diffraction data
  19. The role of Si impurities in the transient dopant segregation and precipitation in yttrium-doped alumina
  20. Using microfabricated devices to determine the fracture strength of materials
  21. Spark plasma sintering of self-doped alumina powders
  22. High density carbon materials obtained at relatively low temperature by spark plasma sintering of carbon nanofibers
  23. Application of new forming and sintering techniques to obtain hydroxyapatite and β-TCP nanostructured composites
  24. Silver-hydroxyapatite nanocomposites as bactericidal and fungicidal materials
  25. Cu-Ni-YSZ anodes for solid oxide fuel cell by mechanical alloying processing
  26. Rapid transient-liquid-phase bonding of Al2O3 with microdesigned Ni/Nb/Ni interlayers
  27. DGM News
  28. Personal
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