Effect of alloy formation processes in the Co-Cu system on the magnetic and magnetoresistance properties of multilayer Co/Cu films with ultrathin Co layers prepared by DC magnetron sputtering
- Authors
- Khalyapin, D. L.; Kim, P. D.; Kim, J.; Turpanov, I. A.; Beten'kova, A. Ya.; Bondarenko, G. V.; Isaeva, T. N.; Kim, I.
- Issue Date
- Sep-2010
- Publisher
- PLEIADES PUBLISHING INC
- Citation
- PHYSICS OF THE SOLID STATE, v.52, no.9, pp.1787 - 1796
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICS OF THE SOLID STATE
- Volume
- 52
- Number
- 9
- Start Page
- 1787
- End Page
- 1796
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/39573
- DOI
- 10.1134/S1063783410090015
- ISSN
- 1063-7834
- Abstract
- This paper reports on a study of multilayer Co/Cu films with an effective thickness of the Co layer of similar to 3.5 , which were prepared by magnetron sputtering. The samples prepared have been found to have a metastable multiphase structure. An analysis of the data obtained by structural and, primarily, by magnetic methods has revealed that the main phases are the Co/Cu supersaturated solid solution (alloy) with a Co concentration of about 30 at %, the superparamagnetic phase, and the paramagnetic phase, which is accounted for by the presence of small (a few atoms at most) Co clusters embedded in the Cu matrix. A clearly pronounced maximum in the temperature dependences of the low-field magnetoresistance has been found, which is associated with the temperature of the magnetic phase transition of the supersaturated Co-Cu alloy.
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