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ID 34137
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Author
Nagao, Nobuaki
Yamada, Hiroyuki
Ueda, Yutaka
Abstract

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.

Keywords
x-ray
modulated structures
low dimensional conductor
vanadium bronze
b-cuxv2o5
Note
Published with permission from the copyright holder. This is the author's copy of the work, as published in Physica B, May 2003, Volume 329-333, Part 2 , Pages 713-714.
Publisher URL: http://dx.doi.org/10.1016/S0921-4526(02)02021-5
Copyright 2003 Elsevier B.V. All rights reserved.
Published Date
2003-5
Publication Title
Physica B
Volume
volume329-333
Start Page
713
End Page
714
Content Type
Journal Article
language
英語
Refereed
True
DOI
Submission Path
physics_general/2