Crystal structure of new Pt-doped Fe pnictide superconductors

Takayuki Kawamata, Takefumi Iida, Kazunori Suzuki, Erika Satomi, Yoshiaki Kobayashi, Masayuki Itoh, Masatoshi Sato

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Single crystals of the recently found superconducting system Ca-Fe-Pt-As have been prepared and used in X-ray Rietveld analyses, where we have identified two types of structure; SrZnBi2 type (type A; I4=mmm) and HfCuSi2 type (type B; P4=nmm). Both structures consist of Fe1-xPt xAs conducting layers with As and Ca atoms between them. The unit cell of the system of type A has two Fe1-xPtxAs layers, while that of type B has only one layer. The superconducting transition appears in both systems, even though the fraction of Pt atoms, which act as strong electron scatterers, is as large as ̃0.2.

Original languageEnglish
Article number073710
Journaljournal of the physical society of japan
Issue number7
Publication statusPublished - 2011 Jul
Externally publishedYes


  • Ca-Fe-Pt-As
  • Fe pnictides
  • Superconducting symmetry
  • X-ray Rietveld analysis

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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