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Magnetic Properties and Critical Currents of the Superconducting Rhodium Borides YRh4B4 and HoRh3.8Ru0.2B4

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Inorganic Materials Aims and scope

Abstract—

We have studied the electrical-transport, thermophysical, and magnetic properties of the YRh4B4 and HoRh3.8Ru0.2B4 compounds. YRh4B4 has been shown to be a classic type II superconductor with Tc ~ 10 K, whereas the superconducting transition of HoRh3.8Ru0.2B4 (at Tc ~ 6 K) occurs along with its ferrimagnetic transition (Tm ~ 22–23 K). We have measured magnetic irreversibility loops for the YRh4B4 and HoRh3.8Ru0.2B4 compounds and calculated Jc(B) in the Bean model. The reduced pinning force Fp/Fp max as a function of hp = B/Bc2 for YRh4B4 has been shown to obey a “scaling” law, whereas the magnetic superconductor HoRh3.8Ru0.2B4 exhibits a significant deviation from the scaling law for hp > 0.2.

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ACKNOWLEDGMENTS

In our measurements, we used equipment at the Shared Research Facilities Center, Lebedev Institute of Physics, Russian Academy of Sciences.

Funding

This work was supported by the Russian Federation Ministry of Science and Higher Education (state research target no. 007-00129-18-00) and the Russian Foundation for Basic Research (project no. 19-02-00888).

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Authors and Affiliations

  1. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119991, Moscow, Russia

    G. S. Burkhanov & S. A. Lachenkov

  2. Lebedev Institute of Physics, Russian Academy of Sciences, 119991, Moscow, Russia

    V. A. Vlasenko & S. Yu. Gavrilkin

  3. Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, 108840, Troitsk, Moscow, Russia

    E. P. Khlybov

Authors
  1. G. S. Burkhanov
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  2. S. A. Lachenkov
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  3. V. A. Vlasenko
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  4. E. P. Khlybov
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  5. S. Yu. Gavrilkin
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Corresponding author

Correspondence to S. A. Lachenkov.

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Translated by O. Tsarev

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Burkhanov, G.S., Lachenkov, S.A., Vlasenko, V.A. et al. Magnetic Properties and Critical Currents of the Superconducting Rhodium Borides YRh4B4 and HoRh3.8Ru0.2B4 . Inorg Mater 57, 687–692 (2021). https://doi.org/10.1134/S0020168521070025

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  • DOI: https://doi.org/10.1134/S0020168521070025

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