Correlation between site preference, superconductivity and magnetism in Pb2Sr2Y1 - xCax(Cu1 - yMy)3O8 (M = Fe, Co, Ni, Zn, Ga)

Yoji Koike, Masahiro Kaiwa, Tsuyoshi Kajitani, Masatsune Kato, Hiromu Sunagawa, Takashi Noji, Norio Kobayashi, Yukio Morii, Satoru Funahashi, Yoshitami Saito

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10 Citations (Scopus)

Abstract

Site preference of the partially substituted 3d metal M and superconducting and magnetic properties have been investigated for Pb2Sr2Y1 - xCax(Cu1 - yMy)3O8 (M = Fe, Co, Ni, Zn, Ga). It has been found from powder neutron diffraction that Fe atoms preferentially occupy the Cu(1) site in the oxygen-free Cu layer, while Co, Ni, Zn and Ga atoms occupy the Cu(2) site in the CuO2 layer. From correlation between this site preference of M and the superconducting and magnetic properties, it has been concluded that the partial Cu(1)-site substitution shows little effect on the superconductivity and that there remains antiferromagnetic correlation between Cu2+ spins in the Cu(2) site in the normal state even for the high-Tc samples of x = 0.5 with Tc ≈ 80 K.

Original languageEnglish
Pages (from-to)409-420
Number of pages12
JournalPhysica C: Superconductivity and its applications
Volume211
Issue number3-4
DOIs
Publication statusPublished - 1993 Jun 20

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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