| EPSRC Reference: |
GR/L95427/01 |
| Title: |
THEORETICAL STUDY OF FINITE TEMPERATURE MAGNETISM IN METALLIC THIN FILMS |
| Principal Investigator: |
Staunton, Professor JB |
| Other Investigators: |
|
| Researcher Co-Investigators: |
|
| Project Partners: |
|
| Department: |
Physics |
| Organisation: |
University of Warwick |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
15 May 1998 |
Ends: |
14 May 2001 |
Value (£): |
141,373
|
| EPSRC Research Topic Classifications: |
| Magnetism/Magnetic Phenomena |
|
|
| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
|
|
| Related Grants: |
|
| Panel History: |
|
|
Summary on Grant Application Form |
|
The proposal is to extend the 'first principles', mean filed theory of finite temperature metallic magnetism to thin films in which thermally induced spin fluctuations are modelled in terms of local moments . The relativistic version of this approach will be set up so that magnetic anistropic effects are also included. The theory will be implemented using the screened KKR multilayer code, available via the CCP-9 network and collaborators, and current bulk codes and applied to Fe, Ni and Co films of varying thicknesses on appropriate non-magnetic substrates. The electronic structures for T = OK and T > Tc films will be studied together with calculations of the T = OK magnetic anistropy in the metals and also alloy films. The direction for the onset of magnetisation in the metal films as the temperature is lowered through Tc will be determined and compared with the O = OK easy axis to see whether there is an intrinsic thermally induced spin reorientation. Tc and the magnetic correlations in the films for T > Tc are to be studied as a function of the films; thicknesses i.e. as the dimensionlaity is changed from 2 to 3. The results will be analysed so that temperature dependent exchange and anistropy constants can be extracted. These will be of relevance to micromagnetics modelling and also for studies such as Monte Carlo, of the dimensional cross-over of the critical behaviour of thin films from Heisenberg-like to Ising-like as the films thicknesses are reduced.
|
|
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.warwick.ac.uk |