Superspace group description of modulated composite crystal (Sr2Cu2O3)(0.70)CuO2, "Sr14Cu24O41" with two-legged ladder and 1D chain

Citation
Y. Gotoh et al., Superspace group description of modulated composite crystal (Sr2Cu2O3)(0.70)CuO2, "Sr14Cu24O41" with two-legged ladder and 1D chain, PHYSICA C, 357, 2001, pp. 384-387
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
0921-4534 → ACNP
Volume
357
Year of publication
2001
Part
1
Pages
384 - 387
Database
ISI
SICI code
0921-4534(200108)357:<384:SGDOMC>2.0.ZU;2-K
Abstract
The modulated structure of single composite crystal, (Sr2Cu2O3)(0.70)CuO2, "Sr14Cu24O41" with two-legged Cu2O3 ladder and one dimensional CuO2 chain h as been investigated by means of the X-ray diffraction method and (3+1)-dim ensional superspace group approach. The model of the modulated composite st ructure of (Sr2Cu2O3)(0.70)CuO2 with centrosymmetric superspace group has b een compared with the model with acentric superspace group. By considering all of the Sr-O lengths and the magnitude of their modulation amplitudes, i t has been deduced that the atomic modulation waves with centrosymmetric sy mmetry are more significant for the modulated structure of (Sr2Cu2O3)(0.70) CuO2 than the waves with acentric symmetry. (C) 2001 Elsevier Science B.V. All rights reserved.