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

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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
Volume67
Issue number5
DOIs
Publication statusPublished - May 1998
Externally publishedYes

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Unusual Magnetic Properties of the D + AF and M + AF Phases in CuGe<sub>1-cursive Greek chi</sub>Si<sub>cursive Greek chi</sub>O<sub>3</sub>'. Together they form a unique fingerprint.

  • Cite this