B05
Probing the electrical activity of grain boundaries in acceptor-doped perovskite oxides through ion transport experiments

Overview

Project B05 has the overarching aim to determine and understand the space-charge potential at grain boundaries in BaTiO3 ceramics by studying ion transport across and along these interfaces. The space-charge potential is determined for specifically conditioned ceramics by means of impedance spectroscopy, and by means of a new, complementary approach: the characterization of fast cation diffusion along grain-boundaries in BaTiO3 ceramics using Secondary Ion Mass Spectrometry (SIMS) analysis. The project thus also yields cation diffusion data, information that is necessary for the analysis and simulation of grain-growth, sintering and dopant-accumulation phenomena.

Researchers

  Name Contact
Prof. Dr. Roger De Souza
+49 241 80 94739
Gregor Brannys M.Sc.
+49 241 80-97878
Timon Kielgas M.Sc.
+49 241 80-97289

Publications

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