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Details of Grant 

EPSRC Reference: GR/M23939/01
Title: INVESTIGATION OF ADVANCED METAL-IN -GAP MAGNETIC RECORDING HEADS
Principal Investigator: Mapps, Professor D
Other Investigators:
Pan, Professor G Wilton, Dr D
Researcher Co-Investigators:
Project Partners:
Pre Nexus Migration
Department: Communication & Electronic Eng
Organisation: University of Plymouth
Scheme: Standard Research (Pre-FEC)
Starts: 01 February 1999 Ends: 31 January 2001 Value (£): 106,179
EPSRC Research Topic Classifications:
Materials Processing
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
The recent trend in research in helical scan (e.g. video) recording of consumer use is towards high-frequency digital television signals. Such recording requires much higher frequencies to be stored as binary information with reduced bit length on high-coercivity magnetic recording tape. Magnetic heads for digital video will require high field gradients for writing and extended frequency response for reading the digital information. This project will both theoretically and experimentally evaluate new thin-film materials to be coated on the inside of the recording gap of the video heads so as to create non-symmetric field functions ( such field profiles determine writing field gradients and head frequency response). The research will model field functions using Vector Fields Ltd, TOSCA and ELEKTRA finite element software to establish the head playback function and so predict optimum frequency response using a numerical and/or analytical evaluation of the Reciprocity Integral. Writing field gradients will be modelled and conditions for optimum writing performance will be found. Gap film ,material used in the experiments will be combination of magnetic films and non-magnetic but highly conducting films for eddy-current induced filed modification at high frequency.
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Organisation Website: http://www.plym.ac.uk