Маgnetoresistive Effect in Granular Film Alloys Based on Ag and Fe or Со

Author(s) L.V. Odnodvorets , І.Yu. Protsenko, O.P. Tkach , Yu.M. Shabelnyk , N.I. Shumakova

Sumy State University, 2, Rymskyi-Korsakov Str., 40007 Sumy, Ukraine

Issue Volume 9, Year 2017, Number 2
Dates Received 10 January 2017; revised manuscript received 26 April 2017; published online 28 April 2017
Citation L.V. Odnodvorets, І.Yu. Protsenko, O.P. Tkach, et al., J. Nano- Electron. Phys. 9 No 2, 02021 (2017)
DOI 10.21272/jnep.9(2).02021
PACS Number(s) 75.70.i, 75.47.Np
Key words Granular films alloys, Atoms concentration, Spin-dependent scattering of electrons, GMR (2) .
Abstract The results of studies magnetoresistive effect in granular film alloys based on Ag and Fe or Co were presented. It is established that in the total atomic concentration of nonmagnetic components from 15 to 68 at. % in such materials form granules, causing spin-dependent scattering of electrons and the effect of GMR, whose value at T  300 K does not exceed 0.6 %. It is shown that the indicated film systems can be used as sensitive sensor elements, since the phase composition of granules is the wide temperature and concentration intervals of stability. Based on analysis of the dependence GMR versus the radius granules Co in solid solution Ag (Co) concluded that at rgr  4-5 nm there is effective spin-dependent scattering of electrons and causes high GMR. With increasing rgr decreasing the granules concentration and, consequently, the value of GMR.


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