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Low Loss Transmission Electron Spectroscopic Studies in Donor Doped BaTiO3

Published online by Cambridge University Press:  10 February 2011

Kalpana S. Katti ,
Maoxu Qian  and
Mehmet Sarikaya
Kalpana S. Katti
Affiliation:
Department of Materials Science and Engineering, University of Washington, Box 352120, WA 98195, USA
Maoxu Qian
Affiliation:
Department of Materials Science and Engineering, University of Washington, Box 352120, WA 98195, USA
Mehmet Sarikaya
Affiliation:
Department of Materials Science and Engineering, University of Washington, Box 352120, WA 98195, USA
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Abstract

We used the Kramers-Kronig transformation to investigate the local dielectric function of barium titanate, BaTiO3 from regions of sub-micrometer scale. Further the effect of dopants, in this case, Nb, on the dielectric function was investigated to assess the level of its local partitioning in the BaTiO3 lattice. The transmission electron energy loss spectroscopy technique was used to obtain dielectric function by placing a small electron probe in isolated regions of the electron transparent BaTiO3 samples. We observed an anomalous, but consistent, shift in the volume plasmon in all regions of the doped sample (compared to the pure one) indicating a uniform incorporation of the dopant within the lattice.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 411: Symposium T – Electricaly-Based Microstructural Characterization , 1995 , 191
Copyright
Copyright © Materials Research Society 1996

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References

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