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<p>To analyze the effect of sodium doping on iron-selenide 122 superconductors family we have grown crystals of (Na, K, Rb)Fe<sub>2</sub>Se<sub>2</sub>. Using resistive and magnetic probes it was confirmed that Na<sub>0.27</sub>K<sub>0.27</sub>Rb<sub>0.27</sub>Fe<sub>2</sub>Se<sub>2</sub> shows high quality and homogeneity of the superconducting properties below T<sub>c</sub> ≈ 32&#xa0;K. The morphology and composition were studied for this sample as seen via electron microscopy and showed the presence of a new sodium-rich phase.</p>

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Effect of Na Doping on the Structural, Superconductive and Magnetic Properties of Iron-Based Chalcogenides (Na, K,Rb)xFe2−ySe2

  • 期刊论文

  • 发表日期：

    2026年1月7日

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  • Yevgeny Rakhmanov,
  • Sergey Gavrilkin,
  • Alena Levakhova,
  • Svetoslav Kuzmichev,
  • Igor Morozov,
  • Andrei Shilov,
  • Tatiana Kuzmicheva

摘要

To analyze the effect of sodium doping on iron-selenide 122 superconductors family we have grown crystals of (Na, K, Rb)Fe2Se2. Using resistive and magnetic probes it was confirmed that Na0.27K0.27Rb0.27Fe2Se2 shows high quality and homogeneity of the superconducting properties below Tc ≈ 32 K. The morphology and composition were studied for this sample as seen via electron microscopy and showed the presence of a new sodium-rich phase.