Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO<SUB>1−<I>y</I></SUB> (Ln = La, Nd)

• Lee Chul-Ho

  National Institute of Advanced Industrial Science and Technology

• Iyo Akira

  National Institute of Advanced Industrial Science and Technology

• Eisaki Hiroshi

  National Institute of Advanced Industrial Science and Technology

• Kito Hijiri

  National Institute of Advanced Industrial Science and Technology

• Fernandez-Diaz Maria Teresa

  Institut Laue-Langevin

• Ito Toshimitsu

  National Institute of Advanced Industrial Science and Technology

• Kihou Kunihiro

  National Institute of Advanced Industrial Science and Technology

• Matsuhata Hirofumi

  National Institute of Advanced Industrial Science and Technology

• Braden Markus

  II. Physikalisches Institut, Universität zu Köln

• Yamada Kazuyoshi

  Institute for Materials Research, Tohoku University

Bibliographic Information

Other Title

• Effect of structural parameters on superconductivity in fluorine-free LnFeAsO1-y (Ln = La, Nd)
• Effect of Structural Parameters on Superconductivity in Fluorine-Free LnFeAsO_1-<i>y</i> (Ln = La, Nd)

Abstract

The crystal structure of LnFeAsO_1−y (Ln = La, Nd) has been studied by the powder neutron diffraction technique. The superconducting phase diagram of NdFeAsO_1−y is established as a function of oxygen content which is determined by Rietveld refinement. The small As–Fe bond length suggests that As and Fe atoms are connected covalently. FeAs₄-tetrahedrons transform toward a regular shape with increasing oxygen deficiency. Superconducting transition temperatures seem to attain maximum values for regular FeAs₄-tetrahedrons.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 77 (8), 083704-083704, 2008

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• oxypnictides
• superconductivity
• powder neutron diffraction
• crystal structure analysis

Details

• CRID: 1390282679174359040
• NII Article ID: 130005437009
• NII Article ID: 110006914821
• NII Article ID: 210000107363
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.77.083704
• BIBCODE: 2008JPSJ...77h3704L
• ISSN: 13474073
• ISSN: 00319015
• ISSN: http://id.crossref.org/issn/00319015
• NDL BIB ID: 9617062
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9617062
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.77.083704
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed