R.F.C. Farrow, S.S.P. Parkin, et al.
Applied Physics Letters
Giant magnetoresistance is reported in as-grown, epitaxial Co-Cu and Co-Ag alloy layers. The (111)- and (001)-oriented films were deposited onto (0001) sapphire and (001) rocksalt substrates, respectively, by co-evaporation in ultrahigh vacuum. Phase separation of the Co and Cu or Ag was obtained without any annealing after growth. The magnetoresistance at 4.2 K exceeded 50% and 70% in Co-Cu and Co-Ag films, respectively, and for films deposited at -250 °C a significant perpendicular magnetic anisotropy was observed in both magnetoresistance and magnetization studies. Grazing-incidence small-angle X-ray scattering indicates that the characteristic diameter and separation of Co clusters are approximately 25 Ä and 76 Á, respectively, in (111) Co-Ag films grown at 250 °C. © 1993 IOP Publishing Ltd.
R.F.C. Farrow, S.S.P. Parkin, et al.
Applied Physics Letters
S. Ingvarsson, Gang Xiao, et al.
Applied Physics Letters
S.S.P. Parkin, E.M. Engler, et al.
Physical Review Letters
L. Thomas, M. Hayashi, et al.
INTERMAG 2006