Granular giant magnetoresistance at low fields in bilayer thin films
- 13 September 1993
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 63 (11) , 1579-1581
- https://doi.org/10.1063/1.110754
Abstract
Granular giant magnetoresistance is observed at saturation fields of 350–1100 Oe in thin-film structures consisting of a discontinuous layer of Co or NiFe deposited on an insulating substrate and overcoated with Cu. The phenomena are similar to that recently observed in codeposited immiscible alloys such as Co-Cu, although at lower fields. The bilayer structure does not require immiscibility and thus allows a greater materials choice. Magnetoresistance values up to 3% are observed and the reduced saturation fields are attributed to the controlled size and shape of the ferromagnetic islands.Keywords
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