| EPSRC Reference: |
EP/G069069/1 |
| Title: |
Bi0.8Nd0.2FeO3: a new PbO-free antiferroelectric ceramic |
| Principal Investigator: |
Reaney, Professor IM |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Materials Science and Engineering |
| Organisation: |
University of Sheffield |
| Scheme: |
Standard Research |
| Starts: |
01 October 2009 |
Ends: |
30 September 2012 |
Value (£): |
286,910
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Materials Synthesis & Growth |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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| Related Grants: |
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| Panel History: |
| Panel Date | Panel Name | Outcome |
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30 Apr 2009
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Materials Prioritisation Panel
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Announced
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Summary on Grant Application Form |
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There are only a handful of functional oxides which exhibit antipolar cation displacements that can be fabricated at ambient pressures. Such compounds have either the NaNbO3 or PbZrO3 structure which differ in that the antipolar displacements are along the edges and face diagonals, respectively, of the pseudcocubic perovskite cell. Of these two structural types, only PbZrO3-based compounds, have ever shown the ability to switch between an antipolar (antiferroelectric) and polar (ferroelectric) states under electric field, giving rise to large strain and/or charge. The large polarisation and strain associated with PbZrO3 has resulted in its use as an end members in the solid solution PbZrO3 - PbTiO3 (PZT) which is the main functional ceramic system utilised for sensor and actuator applications. However, environmental legislation governing the fabrication of ceramics using PbO may well limit future markets for PZT. The discovery of a new PbO-free compound, Bi0.8Nd0.2FeO3, with the PbZrO3 structure is therefore extremely timely, of the utmost significance from a fundamental scientific perspective and could herald a new generation of PbO-free ceramics suitable for device applications. The proposal aims to understand the fundamental structure property relations of materials based on Bi0.8Nd0.2FeO3 and to develop ceramics suitable for device applications
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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 |
| Summary |
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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 |