Crystal structure of Tl2Ba2Ca2Cu3O10, a 125 K superconductor
Abstract
The structure of the high-temperature superconductor Tl2Ba2Ca2Cu3O10 has been determined from single-crystal X-ray diffraction data and is found to be tetragonal, with a = 3.85 A and c = 35.9 A. No superstructure is observed, and the material is essentially twin-free. Electron microscopy in the Tl/Ba/Ca/Cu/O system has revealed intergrowths where n = 5; such regions may well be responsible for the superconducting onset behavior observed in this system at about 140 K.
- Publication:
-
Science
- Pub Date:
- April 1988
- DOI:
- 10.1126/science.240.4852.631
- Bibcode:
- 1988Sci...240..631T
- Keywords:
-
- Barium Oxides;
- Crystal Structure;
- High Temperature Superconductors;
- Mixed Oxides;
- Thallium Compounds;
- Transition Temperature;
- Calcium Oxides;
- Copper Oxides;
- Electron Microscopy;
- Single Crystals;
- X Ray Diffraction;
- Solid-State Physics