Magnetic and electrical transport properties of co-sputtered FexCu100−x composite films

Observation of enhanced positive magnetoresistance at low temperatures in Ni0.8Fe0.2/C granular composites

“…But heat treated (Fe 20 Ni 80 ) 21 Ag 79 thin films showed only 6% MR at 300 K and 13% at 77 K in ∼8 kOe magnetic fields [7]. Fe 8.7 Cu 91.3 granular thin films also exhibit ∼13% negative MR at 3 K on applying of 50 kOe magnetic field [18]. Nanometer sized permalloy (Ni 0.8 Fe 0.2 ) particles embedded in graphite matrix showed large (∼26%) positive MR at 300 K under a magnetic field of 50 kOe [19].…”