Giant magnetoresistance of granular microwires: Spin-dependent scattering in integranular spacers

  title={Giant magnetoresistance of granular microwires: Spin-dependent scattering in integranular spacers},
  author={A. B. Granovsky and Maxim Ilyn and Arcady P. Zhukov and Valentina Zhukova and J. M. Gonz{\'a}lez},
  journal={Physics of the Solid State},
The anomalous behavior of magnetoresistance has been revealed in a number of granular microwires. In contrast to the giant magnetoresistance of granular alloys, which is associated with the spin-dependent scattering in the bulk of grains and at their surface, is linear in the square of the magnetization, and decreases with an increase in temperature, the magnetoresistance, for example, in Co10Cu90 microwires is negative, increases with an increase in temperature below the Curie temperature, and… 
Kondo Effect and Magnetotransport Properties in Co-Cu Microwires
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A record 40% room temperature giant magnetoresistance has been achieved in a nanogranular Co/Ag alloyby optimizing the concentration, sputtering conditions, and cumulative short thermal treatments.
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Negative Magnetoresistivity in Dilute Alloys
The negative magnetoresistivity of dilute alloys containing magnetic transition impurities is calculated in the second Born approximation using an $s\ensuremath{-}d$ exchange model. Physically the
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Giant magnetoresistance in heterogeneous thin film Cu-Co alloys consisting of ultrafine Co-rich precipitate particles in a Cu-rich matrix is observed, modeled by including spin-dependent scattering at the interfaces between the particles and the matrix, as well as the spin- dependent scattering in the Co- rich particles.
Giant magnetoresistance in nonmultilayer magnetic systems.
  • Xiao, Jiang, Chien
  • Materials Science, Geology
    Physical review letters
  • 1992
We have observed isotropic giant magnetoresistance (GMR) in nonmultilayer magnetic systems using granular magnetic solids. We show that GMR occurs in magnetically inhomogeneous media containing
Spin-disorder effects in the electrical resistivity of Ni-based amorphous alloys.