Journal of Superconductivity and Novel Magnetism

, Volume 30, Issue 4, pp 1109–1114 | Cite as

GMR and Kondo Effects in Cu-Co Microwires

  • V. Zhukova
  • J. Mino
  • J. J. Del Val
  • M. Ipatov
  • R. Varga
  • M. N. Baibich
  • G. Martinez
  • A. Granovsky
  • A. Zhukov
Original Paper


We studied the effect of annealing on magneto-transport, magnetic, and structural properties of Cu100−x Co x (x = 5, 10, 20) glass-coated microwires prepared using the Taylor-Ulitovsky technique. Both as-prepared and annealed samples exhibit magnetoresistance effect. We observed a Kondo-like effect in as-prepared and annealed Cu95Co5 microwire and a significant increase of the giant magnetoresistance (GMR) in all studied Co-Cu after annealing. The origin of GMR effect and Kondo-like behavior is discussed considering structural changes of the annealed samples.


Magnetic microwires Giant magnetoresistance Kondo effect Granular alloy 



This work was supported by Spanish MINECO under MAT2013-47231-C2-1-P and the Russian Science Foundation under the 16-19-10233 grants. Technical and human support provided by SGIker (UPV/EHU, MICINN, GV/EJ, ERDF, and ESF) is gratefully acknowledged. VZ and AZ wish to acknowledge the support of the Basque Government under Program of Mobility of the Researchers of the Basque Government (grants MV-2016-1-0025 and MV-2016-1-0018, respectively).


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Dpto. de Física de Materiales, Fac. QuímicasUPV/EHUSan SebastianSpain
  2. 2.Dpto. de Física Aplicada, EUPDSUPV/EHUSan SebastianSpain
  3. 3.Institute of Physics, Faculty of ScienceUPJSKosiceSlovakia
  4. 4.Instituto de FísicaUFRGSPorto AlegreBrazil
  5. 5.Moscow State “Lomonosov” UniversityMoscowRussia
  6. 6.IKERBASQUE, Basque Foundation for ScienceBilbaoSpain

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