Electron spin resonance studies of the Hole-Doped Quasi one-dimensional cuprate (Ca₀.₈₀Y₀.₂₀)₀.₈₂CuO₂

Y Miyazaki, Paul Anderson, Peter Edwards

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Electron spin resonance (ESR) and magnetic susceptibility studies have been performed on polycrystalline samples of the quasi one-dimensional cuprate (Ca0.80Y0.2)(0.82)CuO2 for which the formal Cu valence is +2.20. The magnetic behavior of the compound is accurately described by a contribution from alternating Heisenberg chains (ACH), and a Curie-Weiss (CW) component, which appears undetected in our ESR experiments. The latter contribution may be derived from spin fragments introduced by the doped hole carriers which behave in isolation from the ACH chains. After subtracting the CW contribution, the compound shows a typical behavior of the one-dimensional compounds with spin symmetric exchange interactions. Most of the doped hole carriers appear to be localized and dilute the long-range spin correlations along the chain. (C) 2001 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)241-246
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume234
DOIs
Publication statusPublished - 1 Sep 2001

Keywords

  • composite crystal
  • electron spin resonance
  • magnetic susceptibility
  • copper oxides
  • low-dimensional compounds

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