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Studies of microstructure and ruthenium valence in the ruthenocuprates Pb 2 RuSr 2 Cu 2 O 8 Cl and ( Ru , M ) Sr 2 GdCu 2 O 8 ( M = Sn , Nb )
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mclaughlin, Abbie C. Attfield, J. Paul Liu, Rang Su Jang, L.-Y. Zhoue, W. Z. |
| Copyright Year | 2004 |
| Abstract | Ruthenocuprate microstructures and Ru valences have been studied. Electron microscopy reveals short-range order of the RuO6 octahedra rotations into a O2a O2a c supercell in Pb2RuSr2Cu2O8Cl. However, reanalysis of neutron diffraction data gives no significant difference between the populations of the rotation states, showing that the coherence length is very short (o100 Å). The Ru valence estimated from the XANES spectrum of Pb2RuSr2Cu2O8Cl is B5, in keeping with the physical properties of this material which show that there is essentially no Ru–Cu charge transfer. The Ru valence in doped Ru1 xMxSr2GdCu2O8 (M 1⁄4 Sn; Nb) is B4.8 in all samples, verifying a previous rigid band analysis of the charge distribution in these materials. r 2003 Elsevier Inc. All rights reserved. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.ch.ntu.edu.tw/~rsliu/publications/RSLiu-publication/2004/242.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
