| EPSRC Reference: |
GR/R12480/01 |
| Title: |
Improved Precursors For the Mocvd of Strontium Bismuth Tantalate and Related Materials |
| Principal Investigator: |
Jones, Professor A.C. |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Chemistry |
| Organisation: |
University of Liverpool |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 July 2001 |
Ends: |
30 June 2004 |
Value (£): |
183,506
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| EPSRC Research Topic Classifications: |
| Chemical Synthetic Methodology |
Materials Synthesis & Growth |
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Summary on Grant Application Form |
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The ferroelectric metal oxides SrBi2Ta2O9 (SBT) and SrBi2Nb2O9 (SBN) and SrBi2 (Ta1-xNbx)2O9 (SBTN) have a large potential application in computers in non-volatile ferroelectric random access memories (NVFERAM's). These materials show negligible polarisation fatigue, are fully compatible with conventional simple Pt-electrode technology and maintain good electrical properties even when they are very thin. The aim of the project is to demonstrate the feasibility of growing SrTa2O6, SrNb2O6, Sr(Ta1-xNbx)2O6, SrBi2Nb2O9 and SrBi2 (Ta1-xNbx)2O9 films by liquid injection MOVCD using a range of novel double and triple metal alkoxide sources. In order to convert the as grown SrBi2Nb2O9 thin films to the ferroelectric phase, it is necessary to carry out a post-growth thermal anneal at high temperature ( typically 800() in oxygen converting the low temperature fluorite phase to the required bi-layered structure. It is proposed that an existing in-situ Raman facility at Liverpool will be used to dynamically measure phase changes during annealing. By examining the transition rate as a function of temperature it is anticipated that the activation energy for the phase transition and the evolution of ferroelectric domain structures will be obtainable.
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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.liv.ac.uk |