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| Magnetisation dynamics in energy assisted magnetic data storage materials | ||||||||||||||||||
Magnetisation dynamics is a very broad research field and our interest is in the dynamics of thin film materials and particularly nanomagnetic systems. This project is focussed on developing /experimental understanding/ of the physical properties which control the dynamic response of materials. The dynamic behavior of magnetic materials is critical in any data storage application as these systems are increasingly required to supply and record information at GHz rates. Very recently a new class of energy assisted recording technology where microwave power is provided in additional to a short magnetic field pulse has been proposed. Is this the principal behind microwave assisted magnetic recording (MAMR). Here the excitation of magnetization dynamics where a precession of the moment is established allows the magnetization to switch at lower applied fields than would otherwise be the case allowing higher anisotropy materials to be used and so postponing the point at which superparamagnetism degrades data retention. In this project involves using ferromagnetic resonance (FMR) to characterize the damping parameter a in data storage materials. The work will involve creating devices and techniques for FMR experiments on novel perpendicular exchange spring materials. Some earlier work can be found in ref. [1] where a continuous wave system was used to study longitudinal data storage media. These measurements not only allow the anisotropy field to be probed but also provided new information on the damping processes in these materials. [1] "High field ferromagnetic resonance measurements of the anisotropy field of longitudinal recording thin-film media" C.J.Oates, F.Y.Orgrin, S.L.Lee, P.C.Riedi, G.M.Smith, T.Thomson J. Appl. Phys. 91(3) (2002) 1417-1422 Funding Notes The School has full scholarship opportunities for home and EU students. For international students, the School has fees contribution awards. These awards are awarded on a competitive basis. There is a limited amount of funding available for students starting in September 2010 - April 2011, but more opportunities will be available for the next academic year. Further information on funding can be found here: http://www.cs.manchester.ac.uk/phd/funding/ The minimum requirements to get a place in our PhD programme are available from: http://www.cs.manchester.ac.uk/phd/entryrequirements/ |
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Research Assessment Exercise (RAE) 2008 Results
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