Abstract
The bulk superconductor Tl2Ba2Ca3Cu4O12 with Tc (onset) above 112 K has been prepared and structure and chemical composition were examined by X-ray powder diffraction, analytical (EDX) and high resolution electron microscopy. Unit cell dimensions for the tetragonal cell determined by the least squares method are a = 3.853 (1) A ̊, c=41.98 (3) Å. The transition temperature, Tc, of the double layered Tl system increases with the number of Cu-O layers (n) up to n = 3, while it turns down at n = 4.
Original language | English |
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Pages (from-to) | 79-82 |
Number of pages | 4 |
Journal | Physica C: Superconductivity and its applications |
Volume | 158 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 1989 Apr 1 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering