Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1820447 | Physica C: Superconductivity and its Applications | 2006 | 4 Pages |
Abstract
Fluorine and cerium substituted Tl-2212 high-Tc superconductors were produced. X-ray diffraction, Mossbauer effect method, temperature measuring of the resistances and a.c. susceptibilities for all Tl2Ba2Ca1âyCeyCu1.98Fe0.02O8âx/2Fx (0 ⩽ x ⩽ 0.2 and 0 ⩽ y ⩽ 0.1) were applied. It was found that the cerium admixture does not affect significantly the Tl-2212 superconductor properties. Fluorine admixture alone appreciably affects the value of superconducting transition temperature. The biggest increase in Tc is 10 K and is realised for x = 0.10-0.20. Substituting admixtures are not clearly exhibited in Mossbauer parameters, i.e. do not influence Fe-O bonding tangibly.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
A.I. Akimov, V. Ksenofontov, S.A. Lebedev, T.M. Tkachenka,