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Low-temperature anomaly of the magnetization in alloys (Pr,Dy,M)2(Fe,Co)14B (M = Gd, Sm, Nd)

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Abstract

It has been found that temperature dependences of the saturation magnetization of sintered hard magnetic (Pr,Dy,M)2(Fe,Co)14B (M = Gd, Sm, Nd) alloys demonstrate an increase at a temperature lower than a critical temperature (150 K for Sm and Nd and 70 K for Gd). An additive of copper does not influence the critical temperature. It has been assumed that there is a low-temperature phase in which cobalt is replaced with boron that diffuses from the (Pr,Dy,Gd)(Fe,Co)4B phase to the near-surface region of grains of the main magnetic (Pr,Dy,Gd)2(Fe,Co)14B phase.

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Authors and Affiliations

  1. All-Russia Scientific Research Institute of Aviation Materials, ul. Radio 17, Moscow, 105005, Russia

    E. N. Kablov, O. G. Ospennikova, I. I. Rezchikova, R. A. Valeev, I. V. Cherednichenko & V. P. Piskorskii

  2. Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432, Russia

    E. I. Kunitsyna & R. B. Morgunov

Authors
  1. E. N. Kablov
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  2. O. G. Ospennikova
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  3. I. I. Rezchikova
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  4. R. A. Valeev
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  5. I. V. Cherednichenko
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  6. E. I. Kunitsyna
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  7. R. B. Morgunov
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  8. V. P. Piskorskii
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Corresponding author

Correspondence to R. B. Morgunov.

Additional information

Original Russian Text © E.N. Kablov, O.G. Ospennikova, I.I. Rezchikova, R.A. Valeev, I.V. Cherednichenko, E.I. Kunitsyna, R.B. Morgunov, V.P. Piskorskii, 2016, published in Fizika Tverdogo Tela, 2016, Vol. 58, No. 3, pp. 502–505.

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Kablov, E.N., Ospennikova, O.G., Rezchikova, I.I. et al. Low-temperature anomaly of the magnetization in alloys (Pr,Dy,M)2(Fe,Co)14B (M = Gd, Sm, Nd). Phys. Solid State 58, 515–518 (2016). https://doi.org/10.1134/S106378341603015X

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  • DOI: https://doi.org/10.1134/S106378341603015X

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