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
Publication statusPublished - May 1998
Externally publishedYes

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dimerization
thermal expansion
specific heat
magnetic properties
magnetization
temperature

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Unusual Magnetic Properties of the D + AF and M + AF Phases in CuGe1-cursive Greek chiSicursive Greek chiO3 . / Sera, Masafumi; Hiroi, Masahiko; Yamamoto, Ken Ichi; Kobayashi, Norio; Fujita, Osamu; Ogiwara, Atsuyuki; Akimitsu, Jun.

In: Journal of the Physical Society of Japan, Vol. 67, No. 5, 05.1998, p. 1544-1547.

Research output: Contribution to journalArticle

Sera, M, Hiroi, M, Yamamoto, KI, Kobayashi, N, Fujita, O, Ogiwara, A & Akimitsu, J 1998, 'Unusual Magnetic Properties of the D + AF and M + AF Phases in CuGe1-cursive Greek chiSicursive Greek chiO3 ', Journal of the Physical Society of Japan, vol. 67, no. 5, pp. 1544-1547.
Sera M, Hiroi M, Yamamoto KI, Kobayashi N, Fujita O, Ogiwara A et al. Unusual Magnetic Properties of the D + AF and M + AF Phases in CuGe1-cursive Greek chiSicursive Greek chiO3 . Journal of the Physical Society of Japan. 1998 May;67(5):1544-1547.
Sera, Masafumi ; Hiroi, Masahiko ; Yamamoto, Ken Ichi ; Kobayashi, Norio ; Fujita, Osamu ; Ogiwara, Atsuyuki ; Akimitsu, Jun. / Unusual Magnetic Properties of the D + AF and M + AF Phases in CuGe1-cursive Greek chiSicursive Greek chiO3 . In: Journal of the Physical Society of Japan. 1998 ; Vol. 67, No. 5. pp. 1544-1547.
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AU - Yamamoto, Ken Ichi

AU - Kobayashi, Norio

AU - Fujita, Osamu

AU - Ogiwara, Atsuyuki

AU - Akimitsu, Jun

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N2 - 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.

AB - 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.

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