Magnetic properties of semiconducting Y2BaCuO5: DC susceptibility and electron paramagnetic resonance study

E. W. Ong, B. L. Ramakrishna, Z. Iqbal

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The semiconducting, green Y2BaCuO5 compound, which is structurally related to the 90K superconductor YBa2Cu3O7-δ, was found to behave like a S= 1 2 Heisenberg quadratic-layer antiferromagnet with an exchange constant of 2J=33.3 ± 0.5 K. There is a peak in the susceptibility at 30 ± 0.5 K, above which it exhibits Curie-Weiss behavior with the Weiss constant estimated at +55.4 K. The local symmetry around the copper (II) ions was found to be rhombic. The orbital reduction factor for Cu2+ in this compound was estimated to be k=0.52, indicating appreciable covalency in the Cu-O bonds.

Original languageEnglish (US)
Pages (from-to)171-175
Number of pages5
JournalSolid State Communications
Issue number2
StatePublished - Apr 1988

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry


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