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Crystal structure and superconductivity of Bi cuprates of type 1212 and 0212

✍ Scribed by P. Zoller; J. Glaser; B. Seling; A. Ehmann; W. Wischert; S. Kemmler-Sack

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
348 KB
Volume
235-240
Category
Article
ISSN
0921-4534

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✦ Synopsis

Improved material processing of single BiO layered 1212 raises Tc to 102K with a superconducting volu~ne fraction around 30-50% and a critical current density of 2x106 Acre "2 (5K, 0T). Moreover, strong indications for the existence of Bi-1223 are present. Bi-0212 is realized for the first time in the cuprate family 03i,Sr)2YCu2Oo+z, and easily obtained for a partial substitutiov of Fe ~ Cu. According to neutron diffraction profile refinement at RT and 10K the crystal structure is tetragonal (space group 14/mmrn) with double layers of (Cu,Fe)O pyramides. Additionally, the existence of isotypic Pb-0212 is reported.

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