New shear-like structure: The 2212-related cuprate Bi16Sr28Cu17O69+δ

M. Hervieu, M. T. Caldes, S. Cabrera, C. Michel, D. Pelloquin, B. Raveau

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19 Scopus citations


The strategy of shearing mechanism has been applied to the 2212 bismuth cuprate Bi2Sr2CaCu2O8. A new compound has been synthesized, Bi16Sr28Cu17O69+δ; it crystallizes in a monoclinic cell with a = 48.40 (1) Å, b = 5.495 (1) Å, c = 16.283 (4) Å, and β = 109.96 (2)°. This phase exhibits 2212 ribbons running along c that are 9 Bi atoms wide, and shifted by 5.3 Å with respect to each other; these ribbons are interconnected through thin layers involving CuO6 octahedra. In spite of its close relations with an ideal (101)-shear “2212” structure, this cuprate cannot be considered as such and is termed (101)-collapsed “2212” cuprate in agreement with previous works on (010)-collapsed “2201” cuprates. The rupture of the [CuO2] layers and the possibility of using these phenomena for creating columnar defects in high-Tc superconducting cuprates are also discussed.

Original languageEnglish
Pages (from-to)169-175
Number of pages7
JournalJournal of Solid State Chemistry
Issue number1
StatePublished - 1995


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