Antiferromagnetic ordering in Cu2OCl2 studied by the muon spin rotation/relaxation technique

K. Kawashima, H. Okabe, K. Suzuki, S. Kuroiwa, J. Akimitsu, K. H. Sato, A. Koda, R. Kadono

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13 Citations (Scopus)

Abstract

We report on muon spin rotation/relaxation (νSR) studies of the cuprate mineral melanothallite, Cu2OCl2, over a temperature range between 4.1 and 300K. This compound has a pyrochlore-like corner-shared OCu 4 tetrahedral network with an S ≤ 1/2 system. The magnetic susceptibility shows a broad maximum around 140K and drops at 70K. In the νSR measurement, we observed clear muon spin precession spectra below 70K that is evidence for a long-range magnetic ordered state. However, the time spectra also exhibit exponential damping even in the ordered state, suggesting a possible influence of geometrical frustration in this compound. This renders the need for careful examination of the magnetic structure of the ordered state.

Original languageEnglish
Article number145275
JournalJournal of Physics Condensed Matter
Volume19
Issue number14
DOIs
Publication statusPublished - Apr 11 2007
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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