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

doi:10.1063/1.126428

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

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

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 language	English (US)
Pages (from-to)	2621-2623
Number of pages	3
Journal	Applied Physics Letters
Volume	76
Issue number	18
DOIs	https://doi.org/10.1063/1.126428
State	Published - May 1 2000

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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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.",

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AU - Hwang, Jin Ha

AU - Johnson, Kevin D.

AU - Mason, Thomas O.

AU - Dravid, Vinayak P.

PY - 2000/5/1

Y1 - 2000/5/1

N2 - 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.

AB - 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.

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IS - 18

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

Abstract

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