Superconductivity in Anti-ThCr2Si2-type Er2O2Bi Induced by Incorporation of Excess Oxygen with CaO Oxidant

Kyohei Terakado, Ryosuke Sei, Hideyuki Kawasoko, Takashi Koretsune, Daichi Oka, Tetsuya Hasegawa, Tomoteru Fukumura

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7 Citations (Scopus)


Recently, superconductivity was induced by expanding interlayer distance between Bi square nets in anti-ThCr2Si2-type Y2O2Bi through incorporation of excess oxygen with increased nominal amount of oxygen. However, such oxygen incorporation was applicable to only Y2O2Bi among R2O2Bi (R = rare earth metal), probably due to a larger amount of oxygen incorporation for Y2O2Bi. In this study, the interlayer distance in Er2O2Bi was increased by cosintering with CaO, which served as an oxidant, indicating that excess oxygen was incorporated in Er2O2Bi. As a result, superconductivity was induced in Er2O2Bi at 2.2 K.

Original languageEnglish
Pages (from-to)10587-10590
Number of pages4
JournalInorganic chemistry
Issue number17
Publication statusPublished - 2018 Sep 4

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry


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