A new layered iron arsenide superconductor: (Ca,Pr)FeAs2

Hiroyuki Yakita, Hiraku Ogino, Tomoyuki Okada, Akiyasu Yamamoto, Kohji Kishio, Tetsuya Tohei, Yuichi Ikuhara, Yoshito Gotoh, Hiroshi Fujihisa, Kunimitsu Kataoka, Hiroshi Eisaki, Jun Ichi Shimoyama

Research output: Contribution to journalArticlepeer-review

100 Citations (Scopus)


A new iron-based superconductor, (Ca,Pr)FeAs2, was discovered. Plate-like crystals of the new phase were obtained, and its crystal structure was investigated by single-crystal X-ray diffraction analysis. The structure was identified as the monoclinic system with space group P21/m, composed of two Ca(Pr) planes, Fe2As2 layers, and As2 zigzag chain layers. Plate-like crystals of the new phase showed superconductivity, with a Tc of ∼20 K in both magnetization and resistivity measurements.

Original languageEnglish
Pages (from-to)846-849
Number of pages4
JournalJournal of the American Chemical Society
Issue number3
Publication statusPublished - 2014 Jan 22
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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