# High-Tc superconducting phases in the series Bi2.1(Ca, Sr)n+lCunO2n+4+δ

@article{Tallon1988HighTcSP,
title={High-Tc superconducting phases in the series Bi2.1(Ca, Sr)n+lCunO2n+4+$\delta$},
author={J. L. Tallon and Robert G. Buckley and P. W. Gilberd and Melinda Presland and Ian W. M. Brown and M. E. Bowden and L. A. Christian and Reiner Goguel},
journal={Nature},
year={1988},
volume={333},
pages={153-156}
}
• Published 1 May 1988
• Materials Science
• Nature
Following the report of Maeda et al.1 on high-Tc superconductivity in samples of nominal composition BiSrCaCu2Ox we have identified three distinct phases in the homologous series Bi2.1(Ca, Sr)n+lCunO2n+4+δ with n = 1,2 and 3. These have zero resistance Tcs of 80 K, 91 K and 105 K respectively. The structures in the homologous series appear to be based on alternating double bismuth Bi2O2 layers and perovskite (Sr, Ca)O–CuO2 layers, with higher members obtained by intercalating additional 3.1…
259 Citations

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• Materials Science
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• 1988
A new superconductor that displays onset behavior near 120 K has been identified as Bi2Sr3-xCaxCu2O8+y, with x ranging from about 0.4 to 0.9, and electron microscopy studies show an incommensurate superstructure along the a axis that can be approximated by an increase of a factor of 5 over the subcell dimension.

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• Physics
Nature
• 1988
The discovery of 30-K superconductivity in the LaBaCuO system1 and 90-K superconductivity in the YBaCuO system2 stimulated a worldwide search for even higher-temperature superconductors.

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• Hazen Chu
• Materials Science
Physical review letters
• 1988
X-ray diffraction and electron microscopy data are consistent with a structure of alternating perovskite and Bi-Ca-Sr-Cu-O layers, which reveals a b-axis superstructure of 27.2 A, numerous stacking faults, and other defects.