Title :
Effect of Annealing on Extraordinary Hall Effects in Sputtered Granular Cu

Co

Thin Films
Author :
Wang, Jian-Qing ; Kim, Nam H.
Author_Institution :
Dept. of Phys., Binghamton Univ.
Abstract :
This work explores the nanostructure dependence of extraordinary Hall effect (EHE) in Cu80Co20 granular thin films. Upon annealing, an unusual nanostructure evolution in Cu-Co into two Co particles-size distribution affects the magnetotransport properties, most evidently in the EHE. It was concluded that the EHE in annealed films primarily depends on the population of smaller sized particles. Upon annealing, the EHE field sensitivity was gradually reduced from 0.78 nOmega-cm/Oe for the as-deposited film to 0.04 nOmega-cm/Oe for 400degC annealed one
Keywords :
Hall effect; cobalt alloys; copper alloys; discontinuous metallic thin films; magnetic annealing; nanostructured materials; 400 C; Cu80Co20; EHE; annealed granular films; extraordinary Hall effects; field sensitivity; granular thin films; magnetic annealing; magnetotransport properties; nanostructure dependence; particle-size dependence; Annealing; Conductivity; Hall effect; Magnetic field measurement; Magnetic films; Magnetic properties; Magnetic separation; Sputtering; Temperature; Transistors; Annealed granular films; extraordinary Hall effect (EHE); field sensitivity; particle-size dependence;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.879744