EPSRC logo

Details of Grant 

EPSRC Reference: EP/G069069/1
Title: Bi0.8Nd0.2FeO3: a new PbO-free antiferroelectric ceramic
Principal Investigator: Reaney, Professor IM
Other Investigators:
Sinclair, Professor D
Researcher Co-Investigators:
Project Partners:
Department: Materials Science and Engineering
Organisation: University of Sheffield
Scheme: Standard Research
Starts: 01 October 2009 Ends: 30 September 2012 Value (£): 286,910
EPSRC Research Topic Classifications:
Materials Characterisation Materials Synthesis & Growth
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors
Related Grants:
Panel History:
Panel DatePanel NameOutcome
30 Apr 2009 Materials Prioritisation Panel Announced
Summary on Grant Application Form
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
Key Findings
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
Potential use in non-academic contexts
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
Impacts
Description This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
Summary
Date Materialised
Sectors submitted by the Researcher
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
Project URL:  
Further Information:  
Organisation Website: http://www.shef.ac.uk