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Magnetic Properties of Iron-Doped Bi2Se3, a Topological Insulator

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Abstract

We study the dc magnetization of a Bi1.94Fe0.06Se3 single crystal in the temperature range of 1.9 to 400 K in applied magnetic fields up to 70 kOe for two sample orientations in the applied field. We register three magnetic phase transitions and observe considerable anisotropy of the magnetic properties. The coercive force varies with temperature in a nonmonotonic manner. For the sample in a paramagnetic state, we estimate its magnetic moment per iron atom; its Curie–Weiss temperature is found to be negative. Arrot–Belov plots are constructed.

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FUNDING

This work was supported by the Russian Foundation for Basic Research (grants nos. 19-57-52001 and 16-57-52009), the RF Ministry of Education and Science (the subject “Spin,” no. AAAA-A18-118020290104-2) and the RF Government (decision no. 211, contract no. 02.A03.21.0006).

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Authors and Affiliations

  1. St. Petersburg State University, St. Petersburg, Russia

    E. V. Shevchenko, A. Sh. Khachatryan, A. O. Antonenko & E. V. Charnaya

  2. Mekheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia

    S. V. Naumov, V. V. Marchenkov & V. V. Chistyakov

  3. Ural Federal University Named after the First President of Russia B.N. Yeltsin, Yekaterinburg, Russia

    V. V. Marchenkov

  4. National Cheng Kung University, Tainan, Taiwan

    M. K. Lee & L.-J. Chang

Authors
  1. E. V. Shevchenko
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  2. A. Sh. Khachatryan
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  3. A. O. Antonenko
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  4. E. V. Charnaya
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  5. S. V. Naumov
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  6. V. V. Marchenkov
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  7. V. V. Chistyakov
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  8. M. K. Lee
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  9. L.-J. Chang
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Corresponding author

Correspondence to E. V. Charnaya.

Additional information

Translated by A. Kukharuk

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Shevchenko, E.V., Khachatryan, A.S., Antonenko, A.O. et al. Magnetic Properties of Iron-Doped Bi2Se3, a Topological Insulator. Phys. Solid State 61, 1037–1042 (2019). https://doi.org/10.1134/S1063783419060234

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