Magnetism of novel layered cobalt oxysulfide Sr2Cu2CoO2S2 with strongly correlated CoO2 square-planes

Masanori Matoba, T. Takeuchi, S. Okada, Yoichi Kamihara, M. Itoh, K. Ohoyama, Y. Yamaguchi

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Abstract

Magnetic and electronic nature have been investigated for the novel layered oxysulfide Sr2Cu2CoO2S2 (space group I/4mmm). Sr2Cu2CoO2S2 is the antiferromagnet with TN (= 200 K) determined by the measurements of neutron powder diffraction and magnetic susceptibility (χ). The χ shows a broad maximum indicative of two-dimensional antiferromagnetic nature, which is not originated from the (Cu+S)2 layers but the strongly correlated Co2+O2 square-planes revealed by the X-ray photoemission spectroscopy.

Original languageEnglish
Pages (from-to)630-631
Number of pages2
JournalPhysica B: Condensed Matter
Volume312-313
DOIs
Publication statusPublished - 2002 Mar

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Keywords

  • 2D magnetism
  • CoO plane
  • Neutron diffraction
  • SrCuCoOS
  • XPS

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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