A possible relationship between the newly found crystal structure of CuGeO3 and its anomalous dependence of magnetic susceptibility and lattice parameters on temperature

I. Yamada, M. Hidaka, M. Nishi, Jun Akimitsu

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Abstract

According to the newly found room-temperature crystal structure of CuGeO3 (Hidaka et al., J. Phys.: Condens. Matter 9 (1997) 809), four differently distorted CuO6 octahedra are stacked successively along the c-axis, which indicates the existence of four different nearest-neighbor exchange interactions along the c-axis, in spite of regular intervals between the Cu2+ on the c-axis. On the basis of this crystal structure, we propose possible answers to the questions why χ(T) does not fit the Bonner-Fisher curve, and why the lattice parameters behave anomalously when T decreases to Tsp.

Original languageEnglish
Pages (from-to)703-704
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume177-181
Issue numberPART 1
Publication statusPublished - Jan 1998
Externally publishedYes

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Keywords

  • Antiferromagnetism - quantum
  • Crystal structure
  • Peierls spin transition
  • Susceptibility - magnetic

ASJC Scopus subject areas

  • Condensed Matter Physics

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