| EPSRC Reference: |
GR/N09183/01 |
| Title: |
CONTACTLESS MEASUREMENT OF GIANT MAGNETORESISTANCE USING THE MAGNETOREFRACTIVE EFFECT |
| Principal Investigator: |
Thompson, Professor SM |
| Other Investigators: |
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| Department: |
Physics |
| Organisation: |
University of York |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 July 2000 |
Ends: |
30 November 2003 |
Value (£): |
209,911
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| EPSRC Research Topic Classifications: |
| Magnetism/Magnetic Phenomena |
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| EPSRC Industrial Sector Classifications: |
| Electronics |
No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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This project aims to develop and implement infrared spectroscopy as a technique which uniquely enables contactless study of spin dependent transport properties with spatial resolution. This powerful probe is based on the magneto-refractive effect (MRE) which was first theoretically proposed in 1995 and recently demonstrated experimentally. The MRE is based on the fact that the intraband transitions of the conduction electrons dominate the dielectric properties for frequencies below the onset of interband transitions i.e. in the infrared spectral region. Hence this effect provides an innovative method to measure the change of the spin dependant conductivities in materials by detecting changes in the dielectric function. The technique is ideally suited to study spin dependant transport properties in mesomagnetic elements, in magnetic materials with spatial variation of their properties, or spin electronic devices - all of which have not been accessible with conventional electrical measurement techniques in the past. Following our feasibility study we now seek funding to develop further theoretical models of the effect; to add a FTIR spectrometer to the bench-top instrument in order to provide the frequency dependent data needed for determination of spin dependent transport parameters and to design and construct an in situ instrument.
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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.york.ac.uk |