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Fizika Tverdogo Tela, 2019, Volume 61, Issue 11, Pages 2090–2096
DOI: https://doi.org/10.21883/FTT.2019.11.48412.524
(Mi ftt8620)
 

This article is cited in 7 scientific papers (total in 7 papers)

Magnetism

Bistable and multidomain state of $\alpha$-Fe/(PrDy)(FeCo)B ferromagnetic microwires

O. V. Koplaka, V. L. Sidorovb, E. I. Kunitsynaa, R. A. Valeevc, D. V. Korolevc, V. P. Piskorskyc, R. B. Morgunovac

a Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region
b Lomonosov Moscow State University
c All-Russian Scientific Research Institute of Aviation Materials, Moscow
Abstract: Microwire of $\alpha$-Fe(50 at.%)(PrDy)(FeCo)B(48 at.%) was obtained by extracting a hanging melt drop of (PrDy)(FeCo)B in an electron beam. It was shown that a single microwire with a diameter of 50 $\mu$m and a length of 0.8 – 6 mm with an amorphous phase (PrDy)(FeCo)B content of $\sim$48% and a polycrystalline $\alpha$-Fe phase of $\sim$52% has a rectangular narrow magnetic hysteresis loop and, accordingly, a bistable state with a switching field of $\sim$100 Oe. The shortening of the wire to $\sim$0.6 mm leads to a sharp deviation from the squareness of the loop, reducing the slope of the dependence of the magnetization on the field and the coercive force to 20 Oe. In the subsurface layers consisting of the amorphous phase (PrDy)(FeCo)B, oriented areas of reverse magnetization are observed. The role of the magnetic dipole interaction in the formation of a magnetic hysteresis loop of chaotic microwire assemblies of various compositions is discussed.
Keywords: rare-earth magnets, coercive force, magnetic microwires, rare earth metals, magnetisation.
Funding agency Grant number
Russian Academy of Sciences - Federal Agency for Scientific Organizations 18-030 II
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”.
Received: 19.06.2019
Revised: 19.06.2019
Accepted: 24.06.2019
English version:
Physics of the Solid State, 2019, Volume 61, Issue 11, Pages 2061–2068
DOI: https://doi.org/10.1134/S1063783419110209
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: O. V. Koplak, V. L. Sidorov, E. I. Kunitsyna, R. A. Valeev, D. V. Korolev, V. P. Piskorsky, R. B. Morgunov, “Bistable and multidomain state of $\alpha$-Fe/(PrDy)(FeCo)B ferromagnetic microwires”, Fizika Tverdogo Tela, 61:11 (2019), 2090–2096; Phys. Solid State, 61:11 (2019), 2061–2068
Citation in format AMSBIB
\Bibitem{KopSidKun19}
\by O.~V.~Koplak, V.~L.~Sidorov, E.~I.~Kunitsyna, R.~A.~Valeev, D.~V.~Korolev, V.~P.~Piskorsky, R.~B.~Morgunov
\paper Bistable and multidomain state of $\alpha$-Fe/(PrDy)(FeCo)B ferromagnetic microwires
\jour Fizika Tverdogo Tela
\yr 2019
\vol 61
\issue 11
\pages 2090--2096
\mathnet{http://mi.mathnet.ru/ftt8620}
\crossref{https://doi.org/10.21883/FTT.2019.11.48412.524}
\elib{https://elibrary.ru/item.asp?id=41300777}
\transl
\jour Phys. Solid State
\yr 2019
\vol 61
\issue 11
\pages 2061--2068
\crossref{https://doi.org/10.1134/S1063783419110209}
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  • https://www.mathnet.ru/eng/ftt/v61/i11/p2090
  • This publication is cited in the following 7 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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