Single grain boundary characterization of Nb-doped SrTiO3 bicrystals using ac four-point impedance spectroscopy

Jin Ha Hwang, Kevin D. Johnson, Thomas O Mason, Vinayak P. Dravid

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

AC four-point impedance spectroscopy has been applied to Nb-doped SrTiO3 bicrystals. Due to the simplified geometry and highly conductive bulk of the bicrystal, the reference impedance of the electrode was significantly reduced, validating the applicability of ac four-point impedance spectroscopy for electroceramics. DC current-voltage characteristics without any interference due to electrodes confirmed these ac measurements. Using ac four-point impedance spectroscopy, grain boundary contributions are isolated and the corresponding grain boundary thickness and resistivity are estimated.

Original languageEnglish
Pages (from-to)2621-2623
Number of pages3
JournalApplied Physics Letters
Volume76
Issue number18
Publication statusPublished - May 1 2000

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bicrystals
grain boundaries
impedance
spectroscopy
electrodes
alternating current
direct current
interference
electrical resistivity
electric potential
geometry

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Single grain boundary characterization of Nb-doped SrTiO3 bicrystals using ac four-point impedance spectroscopy. / Hwang, Jin Ha; Johnson, Kevin D.; Mason, Thomas O; Dravid, Vinayak P.

In: Applied Physics Letters, Vol. 76, No. 18, 01.05.2000, p. 2621-2623.

Research output: Contribution to journalArticle

Hwang, Jin Ha ; Johnson, Kevin D. ; Mason, Thomas O ; Dravid, Vinayak P. / Single grain boundary characterization of Nb-doped SrTiO3 bicrystals using ac four-point impedance spectroscopy. In: Applied Physics Letters. 2000 ; Vol. 76, No. 18. pp. 2621-2623.
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