X-ray study of modulated structures of beta-Cu<sub>x</sub>V<sub>2</sub>O<sub>5</sub>
Abstract
<p>High resolution X-ray study reveals the wave vector change in the modulated structure of the quasi-one dimensional compound beta'-Cu vanadium bronze. Structural modulation of the reduced wave vector q0 = (0, 0.305, 0) emerges below 220 K in beta'-Cu0.29V2O5 . For beta'-Cu0.39V2O5, not the single q modulation but two kinds of modulations were observed. A three-fold superlattice structure with q1 = (0, 0.333, 0) appears below 210 K. An incommensurate modulated structure with q2 = (0, 0.26 ? 0.29, 0) coexists below 175 K, whose satellite intensity and b* component Qb have temperature and passing-time dependencies between 140 K and 175 K. The competition between q1 and q2 modulations was also observed. It seems that the q2 is deeply related to the physical property change between 140 K and 180 K confirmed by the decrease in the magnetic susceptibility and the increase in the resistivity.</p>
Journal
-
- Physica B
-
Physica B 329-333 713-714, 2003-05
- Tweet
Details 詳細情報について
-
- CRID
- 1050002212486076800
-
- NII Article ID
- 120002307015
-
- Text Lang
- en
-
- Article Type
- journal article
-
- Data Source
-
- IRDB
- CiNii Articles