Magnetoresistive and Magnetooptical Properties of Double-component Film Alloys Based on Iron
| Authors | О.V. Vlasenko, О.P. Tkach, N.I. Shumakova , L.V. Odnodvorets |
| Affiliations |
Sumy State University, 2, Rimsky-Korsakov Str., 40007 Sumy, Ukraine |
| Е-mail | |
| Issue | Volume 10, Year 2018, Number 4 |
| Dates | Received 25 May 2018; revised manuscript received 12 August 2018; published online 25 August 2018 |
| Citation | О.V. Vlasenko, О.P. Tkach, N.I. Shumakova, L.V. Odnodvorets, J. Nano- Electron. Phys. 10 No 4, 04016 (2018) |
| DOI | http://dx.doi.org/10.21272/jnep.10(4).04016 |
| PACS Number(s) | 75.70._i, 75.47.De, 85.75.Bb |
| Keywords | Two-component film system, Ordering processes, Iron germanides, GMR (2) , Magneto-optical Kerr effect. |
| Annotation |
The results of investigations of magnetoresistive and magneto-optical properties of two-component film systems based on Fe and Pd, Pt or Ge formed with different concentrations of paramagnetic or diamagnetic component in one technological cycle by the method of layer or simultaneous condensation with subsequent annealing in the temperatures interval 300-1070 K. The researches of magnetoresistive properties of film materials based on Fe and Pd or Pt indicate that at a total concentration of paramagnetic or diamagnetic metal atoms from 15 to 68 at.% the processes of ordering with the formation of the phases of hct-FePd and hct-FePt, as well as the residual effect of the magnetic interfaces fixation, which causes spin-dependent electron scattering and the giant magnetoresistance effect, whose magnitude at T = 300 K is 0.6 %. Experimental investigations of the magnetoresistive properties of film materials based on Fe and Ge allowed to establish that at cGe = 60-68 at.% increase in magnetoresistance amplitude from (0,02-0,04) % in as-deposition systems to (0,35-0,44 ) % in the films after annealing to 1070 K occurs due to the formation of magnetic phases of the iron germanides throughout the volume of the sample. In the annealed films based on Fe and Pd, Pt or Ge, the Kerr angle dependence of the magnetic field induction in the form of a rectangular hysteresis loop was observed, which is explained by low coercivity of annealed film materials. |
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List of References English version of article |
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