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Physics of the Solid State

, Volume 61, Issue 11, pp 2061–2068 | Cite as

Bistable and Multi-Domain States of α-Fe/(PrDy)(FeCo)B Ferromagnetic Microwires

  • O. V. Koplak
  • V. L. Sidorov
  • E. I. Kunitsyna
  • R. A. Valeev
  • D. V. Korolev
  • V. P. Piskorskii
  • R. B. MorgunovEmail author
MAGNETISM
  • 8 Downloads

Abstract

In this paper, we obtained α-Fe(50 at %)(PrDy)(FeCo)B(48 at %) microwires by extraction of a hanging drop of the (PrDy)(FeCo)B melt in the electron beam. A single microwire with a diameter of 50 μm and a length of 0.8–6 mm and with an amorphous (PrDy)(FeCo)B content of ~48% and a polycrystalline α‑Fe phase of ~52% is shown to have a rectangular narrow magnetic hysteresis loop and, accordingly, a bistable state with a switching field of ~100 Oe. Shortening the wire to ~0.6 mm leads to a sharp deviation from the loop rectangularity and a decrease in the slope of the dependence of magnetization on the field and coercive force to 20 Oe. In the near-surface layers consisting of an amorphous phase (PrDy)(FeCo)B, oriented regions of reverse magnetization are observed. The role of the magnetic dipole interaction in the formation of the magnetic hysteresis loop of chaotic ensembles of microwires with various compositions is discussed.

Keywords:

magnetic microwire closing domains magnetostriction 

Notes

ACKNOWLEDGMENTS

The authors are grateful to N.N. Dremova for help in obtaining SEM data.

FUNDING

The work was supported by the Presidium of the Russian Academy of Sciences, project no. 18-030 II, topic 1 “Nanostructures: physics, chemistry, biology, technology basics.”

CONFLICT OF INTEREST

The authors declare that they have no conflicts of interest.

REFERENCES

  1. 1.
    R. Varga, A. Zhukov, V. Zhukova, J. M. Blanco, and J. Gonzalez, Phys. Rev. B 76, 132406 (2007).ADSCrossRefGoogle Scholar
  2. 2.
    Yu. P. Ivanov, R. P. del Real, O. Chubykalo-Fesenko, and M. Vázquez, J. Appl. Phys. 115, 063909 (2014).ADSCrossRefGoogle Scholar
  3. 3.
    J. Velazquez and M. Vazquez, Phys. B (Amsterdam, Neth.) 320, 230 (2002).Google Scholar
  4. 4.
    H. Peng, F. Qin, and M. Phan, Ferromagnetic Microwire Composites. From Sensors to Microwire Applications, Engineering Materials and Processes (Springer, 2016).Google Scholar
  5. 5.
    A. M. Severino, C. Gómez-Polo, P. Marín, and M. Vázquez, J. Magn. Magn. Mater. 103, 117 (1992).ADSCrossRefGoogle Scholar
  6. 6.
    A. Zhukova, V. Zhukov, J. M. Blancoc, A. F. Cobeno, M. Vazquez, and J. Gonzalez, J. Magn. Magn. Mater. 258, 151 (2003).ADSCrossRefGoogle Scholar
  7. 7.
    S. A. Gudoshnikov, Yu. B. Grebenshchikov, B. Ya. Ljubimov, P. S. Palvanov, N. A. Usov, M. Ipatov, A. Zhu-kov, and J. Gonzalez, Phys. Status Solidi A 206, 613 (2009).ADSCrossRefGoogle Scholar
  8. 8.
    J. Ye, R. P. del Real, G. Infante, and M. Vazquez, J. Appl. Phys. 113, 043904 (2013).ADSCrossRefGoogle Scholar
  9. 9.
    M. Vázquez, A. Jiménez, and R. P. del Real, in Magnetic Nano- and Microwires: Design, Synthesis, Properties and Applications, Woodhead Publ. Series in Electronic and Optical Materials (Woodhead, 2015), p. 379.Google Scholar
  10. 10.
    P. Szary, I. Luciu, D. Duday, E. A. Périgo, T. Wirtz, P. Choquet, and A. Michels, J. Appl. Phys. 117, 17D134 (2015).Google Scholar
  11. 11.
    K. Yamamoto, T. Irie, and M. Takeuchi, J. Jpn. Soc. Powder Powder Met. 63, 630 (2016).CrossRefGoogle Scholar
  12. 12.
    R. E. Maringer and C. E. Mobley, Vac. Sci. Technol. 11, 1067 (1974).ADSCrossRefGoogle Scholar
  13. 13.
    M. M. Serov and B. V. Borisov, Tekhnol. Legk. Splavov 3, 62 (2007).Google Scholar
  14. 14.
    S. J. Lloyd, J. C. Loudon, and P. A. Midley, J. Microsc. 207, 118 (2002).MathSciNetCrossRefGoogle Scholar
  15. 15.
    M. Knobel, L. C. Sampaio, E. H. C. P. Sinnecker, P. Vargas, and D. Altbir, J. Magn. Magn. Mater. 249, 60 (2002).ADSCrossRefGoogle Scholar
  16. 16.
    V. P. Piskorskii, D. V. Korolev, R. A. Valeev, R. B. Morgunov, and E. I. Kunitsyna, in Physics and Engineering of Permanent Magnets, Ed. by E. N. Kablov (VIAM, Moscow, 2018) [in Russian].Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • O. V. Koplak
    • 1
  • V. L. Sidorov
    • 2
  • E. I. Kunitsyna
    • 1
  • R. A. Valeev
    • 3
  • D. V. Korolev
    • 3
  • V. P. Piskorskii
    • 3
  • R. B. Morgunov
    • 1
    • 3
    Email author
  1. 1.Institute of Problems of Chemical Physics, Russian Academy of SciencesChernogolovkaRussia
  2. 2.Moscow State UniversityMoscowRussia
  3. 3.All-Russian Institute of Aviation MaterialsMoscowRussia

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