Superlattices and stacking faults in Bi2(Sr, Ca)3Cu2O8+y
- 1 September 1988
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Letters
- Vol. 58 (3) , 149-156
- https://doi.org/10.1080/09500838808214747
Abstract
Two-dimensional {110} superlattices have been observed in Bi2(Sr, Ca)3Cu2O8+y by transmission electron microscopy from (001) and (110) planes but not from the (100) plane. Lattice images in the (110) plane show stacking faults intersecting the superlattice. It is possible that the existence of superlattices and stacking faults is important in the formation of Cooper pairs for superconductivity, and that ordered multiphase layered assemblages can be used to produce material of higher T c. Comparisons of ionic radii in a similar material, Tl2Ba2CaCu2O8+y, suggest that the superlattice results from periodic lattice strain modulation.Keywords
This publication has 3 references indexed in Scilit:
- Superstructure of the superconductor Bi2Sr2CaCu2O8 by high-resolution electron microscopyNature, 1988
- Crystallography, chemistry and structural disorder in the new high- Tc Bi–Ca–Sr–Cu–O superconductorNature, 1988
- Effective ionic radii in oxides and fluoridesActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1969