Journal of Applied Physics
Feedback | Help | Exit
Journal of Applied Physics
Search:
   
 
 
 
Previous Article
Variation of multilayer magnetoresistance with ferromagnetic layer sequence: Spin-memory loss effects
We find the magnetoresistance (MR) with current flow perpendicular to the layer planes (CPP-MR) of multilayers made of the ferromagnetic metals Co and Py (permalloy = Ni84Fe16) and the nonmagnetic met...
Next Article
Local field and quantum effects for current perpendicular to planes in multilayers
The calculation of giant magnetoresistance and in general, of electron transport for multilayers in the case of current perpendicular to the planes (CPP) requires both the two-point conductivity and t...

Inverse CPP-GMR in (A/Cu/Co/Cu) multilayers (A=NiCr, FeCr, FeV) and discussion of the spin asymmetry induced by impurities

J. Appl. Phys. 81, 4573 (1997); doi:10.1063/1.365432

Issue Date: 15 April 1997

You are logged in to this journal.

C. Vouille, A. Fert, and A. Barthélémy
Unité Mixte de Recherche CNRS-Thomson, 91404 Orsay, France
Université Paris-Sud, 91405 Orsay, France

S. Y. Hsu, R. Loloee, and P. A. Schroeder
Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824
We present CPP-GMR experiments on a series of multilayers of the type (A/Cu/Co/Cu) × N where A is a layer of NiCr, FeCr, or FeV alloys with concentrations of Cr or V between 2.5 and 30 at. %. The inverse GMR effects we observe can be accounted for by the opposite scattering spin asymmetries in Co (positive spin asymmetry) and A (negative spin asymmetry). As the spin asymmetry in A is positive for interface scattering and negative for bulk scattering, the inverse GMR is observed only for thicknesses greater than one at which interface and bulk scattering compensate. We determine the magnitude and sign of the spin asymmetry coefficients, and we notice the agreement with previous data on dilute alloys and with theoretical calculations. ©1997 American Institute of Physics.
Permalink: http://link.aip.org/link/?JAPIAU/81/4573/1
FULL TEXT OPTIONS   (FREE)
Download PDF (96 kB) View Cart

KEYWORDS and PACS

Keywords
PACS
  • 75.70.Pa
    Magnetic properties and materials Magnetic films and multilayers Giant magnetoresistance
  • 75.70.Cn
    Magnetic properties and materials Magnetic films and multilayers Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures)
  • 75.50.Bb
    Magnetic properties and materials Studies of specific magnetic materials Fe and its alloys
  • 75.50.Cc
    Magnetic properties and materials Studies of specific magnetic materials Other ferromagnetic metals and alloys
  • 73.40.Jn
    Electronic structure and electrical properties of surfaces, interfaces and thin films Electronic transport in interface structures Metal-to-metal contacts
  • 72.10.Fk
    Electronic transport in condensed matter Theory of electronic transport; scattering mechanisms Scattering by point defects, dislocations, surfaces, and other imperfections (including Kondo effect)
  • YEAR: 1996-97

PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (15)
View in Separate Window/Tab
  1. M. N. Baibich, J. M. Broto, A. Fert, F. Nguyen Van Dau, F. Petroff, P. Etienne, G. Creuzet, A. Friederich, and J. Chazelas, Phys. Rev. Lett. 61, 2472 (1988). [MEDLINE]
  2. G. Bisnach, P. Grünberg, F. Saurenbach, and W. Zinn, Phys. Rev. B 39, 4828 (1989). [MEDLINE]
  3. In the usual notation, positive spin asymmetry means larger conductivity for the majority spin channel.
  4. T. Valet and A. Fert, J. Magn. Magn. Mater. 121, 378 (1993); [Inspec] [ISI]
    5. Phys. Rev. B 48, 7009 (1993). [MEDLINE]
  5. J. M. George, L. G. Pereira, A. Barthélémy, F. Petroff, L. B. Steren, J. L. Duvail, A. Fert, R. Loloee, P. Holody, and P. Schroeder, Phys. Rev. Lett. 72, 408 (1994). [MEDLINE]
  6. J. P. Renard, P. Bruno, R. Mégy, B. Bartenlian, P. Beauvillain, C. Chappert, C. Dupas, E. Kolb, M. Mulloy, P. Veillet, and E. Vélu, Phys. Rev. B 51, 12821 (1995). [MEDLINE]
  7. S. F. Lee, W. P. Pratt, Q. Yang, P. Holody, R. Loloee, P. A. Schroeder, and J. Bass, J. Magn. Magn. Mater. 118, 1 (1993).
  8. J. L. Duvail, A. Barthélémy, L. B. Steren, R. Morel, F. Petroff, M. Sussiau, M. Wiedmann, A. Fert, P. Holody, R. Loloee, and P. A. Schroeder, J. Magn. Magn. Mater. 151, 324 (1995). [Inspec] [ISI]
  9. S. Y. Hsu, A. Barthélémy, P. Holody, R. Loloee, P. Schroeder, and A. Fert (unpublished).
  10. Q. Yang, P. Holody, R. Loloee, L. L. Henry, W. P. Pratt, Jr., P. A. Schroeder, and J. Bass, Phys. Rev. B 51, 3226 (1995). [ISI] [MEDLINE]
  11. H. Sakakima and M. Satomi, J. Magn. Magn. Mater 121, 374 (1993). [Inspec] [ISI]
  12. See, for example, W. H. Butler, J. M. Mac Laren, and X. G. Zhang, Mater. Res. Soc. Symp. Proc. 313, 59 (1993);
    13. R. K. Nesbet, J. Phys., Condens. Matter 6, L449 (1994). [Inspec] [ISI]
  13. A. Fert and I. A. Campbell, J. Phys. F 6, 849 (1976).
  14. I. Mertig, P. Zahn, M. Richter, H. Eschrig, R. Zeller, and P. H. Dederichs, J. Magn. Magn. Mater. 151, (1995).
  15. L. H. Chen, T. H. Tiefel, S. Jin, R. B. Van Dover, E. M. Gyorgy, and R. M. Fleming, Appl. Phys. Lett. 63, 1279 (1993); [ISI]
    16. B. J. Daniels and B. M. Clemens, 66, 520 (1995). [ISI]

Copyright © American Institute of Physics