Deformation and Magnetoresistive Properties of Low Entropy Functional Film Materials Based on Fe and Pd or Pt
| Authors | L.V. Odnodvorets , Yu.M. Shabelnyk , N.I. Shumakova , O.O. Pasko , D.I. Tolstikov, D.S. Nazarenko, O.O. Karpishchenko |
| Affiliations |
Sumy State University, 2, Rymsky-Korsakov st., 40007 Sumy, Ukraine |
| Е-mail | |
| Issue | Volume 15, Year 2023, Number 6 |
| Dates | Received 22 September 2023; revised manuscript received 21 December 2023; published online 27 December 2023 |
| Citation | L.V. Odnodvorets, Yu.M. Shabelnyk, N.I. Shumakova, et al., J. Nano- Electron. Phys. 15 No 6, 06030 (2023) |
| DOI | https://doi.org/10.21272/jnep.15(6).06030 |
| PACS Number(s) | 73.22. – f, 74.25.Fy, 74.25.Ha, 74.70.Ad |
| Keywords | Low entropy materials, Film alloys based on Fe and Pd or Pt, Processes of ordering atoms, Abnormally low sensitivity to deformation, Magnetoresistance (6) . |
| Annotation |
In the paper, the magnetoresistive properties of low entropy nanoscale film materials based on Fe and Pd or Pt are studied. The samples were formed by the method of layer-by-layer condensation followed by annealing, which made it possible to obtain systems with an atomic ordering in which the effects of anisotropic (AMR) and giant (GMR) magnetoresistance can be realized. Studies of magnetoresistive properties were carried out in three measurement geometries. The thickness of individual layers of film materials was selected in such a way that, in accordance with the state diagrams of Fe-Pd and Fe-Pt for bulk samples, the Fe3Pd or Fe3Pt phases; FePd or FePt and FePd3 or FePt3 were stabilized in the film systems, which is confirmed by electronographic studies. In this film alloys we observed abnormally small (from 1.9 to 2.2 units) values of the strain coefficient at deformation up to 2 % and GMR signs with a small amplitude from 0.1 to 0.4 %. It was established that film alloys based on Fe and Pd or Pt can be used as sensitive elements of flexible magnetic field sensors, as they are thermally stable in a wide temperature range. |
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