ISSN:
1572-9605
Keywords:
superconductivity
;
crystal structure
;
magnetization
;
214
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract The substitution of strontium for lead in the material (La1.5Pb0.5−x Sr x )CuO z , x = 0–0.15 has been carried out. A stable and reproducible single phased superconducting materials can be obtained inside an evacuated quartz tube. The X-ray diffraction pattern shows that the superconducting phase can be indexed on the basis of an orthorhombic symmetry (F mmm) for x = 0 and on the basis of tetragonal symmetry (I 4/mmm) for x 〉 0. The transition temperature T c increases as the strontium substitution parameter x increases. We observed the maximal T c around x = 0.15 with 38 K with fairly large Meissner volume fraction of 38% (FC).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1007790512982
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