| EPSRC Reference: |
GR/L92198/02 |
| Title: |
DESIGN AND CONSTRUCTION OF EPR IMAGING PROBES FOR THE STUDY OF THE DISTRIBUTION OF DEFECTS IN DIAMOND |
| Principal Investigator: |
Newton, Professor ME |
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| Department: |
Physics |
| Organisation: |
Kings College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1999 |
Ends: |
30 September 2000 |
Value (£): |
12,232
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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The objective of the research is to design and develop high sensitivity/high resolution Electron Paramagnetic Resonance Imaging (EPRI) probes for the study of the distribution of paramagnetic defects in solids. The specific application in this proposal is the study of the distribution of paramagnetic defects and impurities in diamond grown by chemical vapour deposition (CVD) at high temperatures and pressures (HTP). The two key elements of EPRI probes are the microwave resonator and the gradient coils. At 9ghz loop gap resonator technology will be used to achieve ultimate spin sensitivity. Cryogenic (&&K) gradient coils will be designed to generate large linear field gradients. Defects and impurities incorporated during growth can dramatically alter the properties of the material. The study of he distribution of nitrogen (readily incorporated in both CVD and HTP grown diamond), hydrogen related defects and other impurities/defects in CVD and HTP diamond will provide a wealth of information on growth conditions, kinetics and material properties. The distribution of paramagnetic optical centres created by optical excitation will be studied by EPRI, the results of such studies will benefit workers developing optical and electronic diamond devices. EPRI opens up new areas of microscopy.
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Key Findings |
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Potential use in non-academic contexts |
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Impacts |
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| Description |
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Sectors submitted by the Researcher |
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