ISSN:
1572-9605
Keywords:
Solid solution
;
La2−x SrxCuO4
;
shielding effect
;
Meissner effect
;
superconducting volume fraction
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract Comparative studies of Meissner and shielding processes have been performed on variously sized samples of the solid solution (La1−x Sr x )2CuO4: (polycrystalline, powder, and single-crystalline) under various magnetic fields in the range 0.03–10 Oe. Considering the kinetics of the two processes, this systematic approach has indicated that the observed Meissner signal can be significantly low with the sample still being wholly superconductive. Based on this comparative study, the tetragonal region of (La1−x Sr x )2CuO4 withx greater than 0.105 has been concluded to be superconductive, suggesting the nonessential involvement of the buckling of the Cu-O-Cu-O bond in the CuO2 layer in the manifestation of superconductivity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00730362
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