Dataset for "Understanding the role of aligned porosity on the intrinsic and extrinsic contributions to the dielectric permittivity of freeze-cast ferroelectrics"

This dataset is a part of the research article 'Understanding the role of aligned porosity on the intrinsic and extrinsic contributions to the dielectric permittivity of freeze-cast ferroelectric'. It contains comprehensive characterisation data for ferroelectric lead zirconate titanate PZT NCE51 ceramic, fabricated using both freeze-casting and conventional solid state route. This dataset contains hysteresis polarisation-electric field loops, impedance spectroscopy data and X-ray diffraction (XRD) patterns, which provide insights into how the microstructure of freeze-cast samples affect the functional properties of the porous freeze-cast ceramics.

In addition, the dataset also contains the results of finite element model, demonstrating how the local field distribution differ between the structures produced via freeze-casting and the burnt-out polymer spheres (BURPS) technique, despite having the same relative density. This difference demonstrate how the permittivity measured differ between these microstructures.

The dataset supports further analysis of the processing-microstructure-property relationships in porous ferroelectric ceramics. This may be of interest to researchers working on design and characterisation of advanced ferroelectric composites.

Subjects:

Energy

Energy Storage

Materials processing

Materials Processing

Materials sciences

Materials Characterisation

Mechanical engineering

Materials testing and engineering

Superconductivity, magnetism and quantum fluids

Condensed Matter Physics

Cite this dataset as:
Vo-Bui, N., Khanbareh, H., Bowen, C., Roscow, J., 2025. Dataset for "Understanding the role of aligned porosity on the intrinsic and extrinsic contributions to the dielectric permittivity of freeze-cast ferroelectrics". Bath: University of Bath Research Data Archive. Available from: https://doi.org/10.15125/BATH-01332.

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Data

Diffraction results.zip
application/zip (37kB)
Creative Commons: Attribution 4.0

Lab X-ray diffraction patterns of freeze-cast and dense PZT NCE51

Hysteresis … ation-field data.zip
application/zip (8MB)
Creative Commons: Attribution 4.0

Hysteresis polarisation-field data of freeze-cast and dense PZT NCE51. This dataset is also used to evaluate the intrinsic and extrinsic contributions to dielectric permittivity

Impedance data.zip
application/zip (41kB)
Creative Commons: Attribution 4.0

Impedance results of freeze-cast and dense PZT NCE51

FE results.zip
application/zip (463kB)
Creative Commons: Attribution 4.0

Finite element results outlining the difference in the local field distribution and permittivity of 3-3 BURPS, 2-2 freeze-cast ceramics, including effects of wall defects (e.g., pores within ceramic walls), pore channel defects (e.g., ceramic grains within pore channels) and ceramic misalignment

Code

FE code.zip
application/zip (58MB)
Creative Commons: Attribution 4.0

Finite element code to representing how the field distribution between the BURPS and freeze-cast microstructures differ, demonstrating the difference between the measured bulk permittivity between these microstructures. In addition, this code is used to assess the effects of local microstructural defects such as wall defects (e.g., pores within ceramic walls), pore channel defects (e.g., ceramic grains within pore channels) and ceramic misalignment relative to the field direction in freeze-cast