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Impedance/Dielectric Spectroscopy of Electroceramics. Part 2: Grain Shape Effects and Local Properties of Polycrystalline Ceramics

Published

Author(s)

N Kidner, Z J. Homrighaus, B J. Ingram, T Mason, Edward Garboczi

Abstract

The reduction of grain size from the microcrystalline regime into the nanocrystalline regime is known to produce significant changes in the transport properties of polycrystalline ceramics. Part 1 of this series [1] described the development of a pixel-based finite-difference nested-cubed model (NCM), which was used to evaluate existing composite models for the electrical/dielectric properties of polycrystalline ceramics over the entire range of grain core vs. grain boundary volume fractions, from the nanocrystalline regime to the microcrystalline regime. Part 2 addresses grain shape and periodicity effects in such composite modeling, and the extraction of local materials properties (conductivity, dielectric constant) from experimental impedance/dielectric spectroscopy data.
Citation
To Be Determined

Keywords

Brick Layer Model, dielectric, effective medium, impedance, Nested Cube Model

Citation

Kidner, N. , Homrighaus, Z. , Ingram, B. , Mason, T. and Garboczi, E. (2021), Impedance/Dielectric Spectroscopy of Electroceramics. Part 2: Grain Shape Effects and Local Properties of Polycrystalline Ceramics, To Be Determined (Accessed December 3, 2021)
Created October 12, 2021