| EPSRC Reference: |
GR/L24755/02 |
| Title: |
HYDROTHERMAL PROCESSING OF BATI03 & CHARACTERISATION CORE-SHELL PHENOMENA USING AC IMPEDANCE SPECTROSCOPY |
| Principal Investigator: |
Sinclair, Professor D |
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| Department: |
Chemistry |
| Organisation: |
University of Sheffield |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 January 2000 |
Ends: |
30 November 2000 |
Value (£): |
15,171
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| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Hydrothermal processing of technologically important materials such as BaTiO3 is being increasingly used as a low temperature route for producing fine grained powders with controlled shape, size and purity that can easily be sintered into dense ceramics with uniform grain size. We plan to prepare a range of different grain-sized BaTiO3 ceramics from well-characterised hydrothermally processed powders and determine their permittivity characteristics using ac impedance spectroscopy as opposed to dc or conventional fixed frequency measurements.The electrical data will be analysed using a wide variety of complex plane and spectroscopic plots and will be correlated with other physical measurements, eg electron microscopy, to systematically study the influence of grain core-shall microstructures on the permittivity characteristics of BaTiO3 ceramics. Improved performance and miniaturisation of BaTiO3-based devices can only be achieved through closer control of powder homogeneity, composition, surface area and grain size. Understanding the influence of core-shell microstructure on the electrical characteristics of fine grained BaTiO3 ceramics is therefore of fundamental importance if BaTiO3 is to remain at the forefront of the electro-ceramics industry.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.shef.ac.uk |