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Novel Iron-Based Superconductor Ca0.5Sm0.5FeAsF

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Abstract

Polycrystalline samples of a novel iron-based 1111-type superconductor Ca0.5Sm0.5FeAsF are synthesized in an argon atmosphere at a pressure of 50 kbar. This superconducting compound was obtained for the first time. The superconducting transition onset temperature of synthesized samples is 54.2 K, which brings the novel compound in line with the highest-temperature ones among all known iron-based superconductors SmFeAs(F,O), GdFeAs(F,O).

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Funding

This study was supported by the Russian Science Foundation, project no. 21-12-00394.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia

    K. S. Pervakov, A. Yu. Tsvetkov & V. A. Vlasenko

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

    L. F. Kulikova

Authors
  1. K. S. Pervakov
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  2. L. F. Kulikova
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  3. A. Yu. Tsvetkov
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  4. V. A. Vlasenko
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Corresponding authors

Correspondence to K. S. Pervakov or V. A. Vlasenko.

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Translated by A. Kazantsev

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Pervakov, K.S., Kulikova, L.F., Tsvetkov, A.Y. et al. Novel Iron-Based Superconductor Ca0.5Sm0.5FeAsF. Bull. Lebedev Phys. Inst. 49, 242–246 (2022). https://doi.org/10.3103/S106833562208005X

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