Title :
Magnetoresistance analysis of nanoscale magnetic correlation in cosputtered Fe100-xAgx films
Author :
Allia, Paolo ; Coisson, Marco ; Tiberto, Paola ; Vinai, Franco ; Bisero, Diego ; Spizzo, Federico
Author_Institution :
Dipt. di Fisica, Politecnico di Torino, Italy
Abstract :
Nanogranular films of composition Ag100-xFex(x: 10, 14, 20, 26, 30 at %) were prepared by dc plasma sputtering deposition. All films exhibit a negative magnetoresistance whose intensity decreases monotonically with temperature, with no apparent saturation up to 50 kOe. A magnetic correlation range Rm is obtained from analysis of the GMR versus M/MS curves. The role of interparticle correlation is investigated as a function of both Fe concentration and temperature.
Keywords :
discontinuous metallic thin films; giant magnetoresistance; iron alloys; silver alloys; sputtered coatings; GMR; cosputtered films; dc plasma sputtering deposition; magnetic correlation range; nanogranular films; nanoscale magnetic correlation; negative magnetoresistance; Giant magnetoresistance; Iron; Magnetic analysis; Magnetic field measurement; Magnetic films; Magnetic materials; Magnetic moments; Plasma temperature; Saturation magnetization; Sputtering; Correlations; magnetoresistance; thin films;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855222
