Unusual Magnetic Properties of the D + AF and M + AF Phases in CuGe1-cursive Greek chiSicursive Greek chiO3

Masafumi Sera, Masahiko Hiroi, Ken Ichi Yamamoto, Norio Kobayashi, Osamu Fujita, Atsuyuki Ogiwara, Jun Akimitsu

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1 Citation (Scopus)


The thermal expansion, specific heat and magnetization of CuGe1-cursive Greek chiSicursive Greek chiO3 have been studied. Although the Néel temperature TN of the D + AF phase, where the antiferromagnetic (AF) phase coexists with the dimerized (D) one, is proportional to cursive Greek chi up to 0.02 in H = 0 as in Cu1-cursive Greek chiZncursive Greek chiGeO3 TN of the M + AF phase, where the AF phase coexists with the magnetic (M) one above 10 T, suddenly increases with cursive Greek chi between cursive Greek chi = 0.005 and 0.008. The AF properties in the D + AF phase are quite unusual in contrast with the normal ones in the AF state for existence of dimerization as a background, which exists below TSP, and the quantum effect plays an important role in this phenomenon.

Original languageEnglish
Pages (from-to)1544-1547
Number of pages4
Journaljournal of the physical society of japan
Issue number5
Publication statusPublished - May 1998
Externally publishedYes


  • CuGeSiO
  • Magnetic phase diagram
  • Néel order
  • Spin-Peierls transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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