STRUCTURE AND RAMAN-SPECTRUM OF BISR2CACU2O7(BI1212) SUPERCONDUCTOR

Authors
HUONG PV LACOUR C MHAMDI M
Citation
Pv. Huong et al., STRUCTURE AND RAMAN-SPECTRUM OF BISR2CACU2O7(BI1212) SUPERCONDUCTOR, Journal of alloys and compounds, 195(1-2), 1993, pp. 691-694
Citations number
21
Categorie Soggetti
Chemistry Physical","Metallurgy & Mining","Material Science
Journal title
Journal of alloys and compounds → ACNP
ISSN journal
09258388
Volume
195
Issue
1-2
Year of publication
1993
Pages
691 - 694
Database
ISI
SICI code
0925-8388(1993)195:1-2<691:SAROBS>2.0.ZU;2-7
Abstract
BiSr2CaCu2O7 (Bi1212) is prepared and characterized by various methods in particular by Raman spectroscopy. The material is found to be very anisotrope. The identity between the polarized Raman spectra along XX and YY axes is in agreement with a tetragonal structure P4/mmm. The c ollapse of the stretching (Bi)O(Cu) from two Raman bands in Bi2212 int o only one band in Bi1212 reflects a vertically aligned bond ordering, similar to that observed when converting from YBa2Cu4O8 into YBa2Cu3O 7 and from Tl2Ba2CaCu2O8 into TlBa2CaCu2O7.