Abstract
An electron diffraction study of an inorganic spin-Peierls system CuGeO3 was performed. Weak superlattice reflections indexed by (h/2)k(l/2)(h, k, l: odd) are observed in electron diffraction patterns taken at about 10 K with the [100] electron incidence. The reflections are interpreted as characteristic of a superlattice structure of the space group Bbcm or Bbmm with cell dimensions a′ ≃ 2a, b′ ≃ b and c′ ≃ 2c and with dimerization of Cu atoms along the quasi-one-dimensional [001] or the [010] direction, which is strong evidence of the spin-Peierls transition. Strong diffuse streaks which run along the c*-direction through the fundamental reflections are observed at the same temperature. The streaks are attributed to low-frequency transverse acoustic waves of the oxygen octahedra and can be precursors to another phase transformation below the spin-Peierls transition.
| Original language | English |
|---|---|
| Pages (from-to) | 2467-2471 |
| Number of pages | 5 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 63 |
| Issue number | 7 |
| Publication status | Published - Jul 1994 |
| Externally published | Yes |
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Keywords
- CuGeO
- Diffuse streaks
- Dimerization
- Electron diffraction
- Spin-Peierls transition
- Superlattice reflections
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Electron diffraction study of an inorganic spin-Peierls system CuGeO 3 . / Kamimura, Osamu; Terauchi, Masami; Tanaka, Michiyoshi; Fujita, Osamu; Akimitsu, Jun.
In: Journal of the Physical Society of Japan, Vol. 63, No. 7, 07.1994, p. 2467-2471.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electron diffraction study of an inorganic spin-Peierls system CuGeO 3
AU - Kamimura, Osamu
AU - Terauchi, Masami
AU - Tanaka, Michiyoshi
AU - Fujita, Osamu
AU - Akimitsu, Jun
PY - 1994/7
Y1 - 1994/7
N2 - An electron diffraction study of an inorganic spin-Peierls system CuGeO3 was performed. Weak superlattice reflections indexed by (h/2)k(l/2)(h, k, l: odd) are observed in electron diffraction patterns taken at about 10 K with the [100] electron incidence. The reflections are interpreted as characteristic of a superlattice structure of the space group Bbcm or Bbmm with cell dimensions a′ ≃ 2a, b′ ≃ b and c′ ≃ 2c and with dimerization of Cu atoms along the quasi-one-dimensional [001] or the [010] direction, which is strong evidence of the spin-Peierls transition. Strong diffuse streaks which run along the c*-direction through the fundamental reflections are observed at the same temperature. The streaks are attributed to low-frequency transverse acoustic waves of the oxygen octahedra and can be precursors to another phase transformation below the spin-Peierls transition.
AB - An electron diffraction study of an inorganic spin-Peierls system CuGeO3 was performed. Weak superlattice reflections indexed by (h/2)k(l/2)(h, k, l: odd) are observed in electron diffraction patterns taken at about 10 K with the [100] electron incidence. The reflections are interpreted as characteristic of a superlattice structure of the space group Bbcm or Bbmm with cell dimensions a′ ≃ 2a, b′ ≃ b and c′ ≃ 2c and with dimerization of Cu atoms along the quasi-one-dimensional [001] or the [010] direction, which is strong evidence of the spin-Peierls transition. Strong diffuse streaks which run along the c*-direction through the fundamental reflections are observed at the same temperature. The streaks are attributed to low-frequency transverse acoustic waves of the oxygen octahedra and can be precursors to another phase transformation below the spin-Peierls transition.
KW - CuGeO
KW - Diffuse streaks
KW - Dimerization
KW - Electron diffraction
KW - Spin-Peierls transition
KW - Superlattice reflections
UR - http://www.scopus.com/inward/record.url?scp=0009940014&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0009940014&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0009940014
VL - 63
SP - 2467
EP - 2471
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 7
ER -