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Abstract
Giant magnetoresistance was discovered in 250-nm-thick Fe_30_4 polycrystaline films with added Pt. The characteristic GMR was about 8.7%. It was found that the GMR is dependent on the Pt content X (at.%) and the sample thickness. The electrical conduction mechanism ρ of the samples were as follows: small polaron hopping for X=0at.%, the barrier tunneling effect at the grain boundary for X=1at.%, and a combination of tunneling and the percolation process for X≧2at.%.
Journal
- Journal of Magnetics Society of Japan [List of Volumes]
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Journal of Magnetics Society of Japan 23(4-2), 1201-1204, 1999-04-15 [Table of Contents]
The Magnetics Society of Japan (MSJ)