Role of lead in the growth of the highT
c
phase in the Bi2−x
Pb
x
Sr2Ca2Cu3O
y
systems |
| |
| Authors: | L S Vaidhyanathan A M Niraimathi P Majumdar G Rangarajan M Muralidhar D Mangapathi Rao M Nagabhushanam V Hari Babu |
| |
| Affiliation: | (1) Department of Physics, Indian Institute of Technology, 600 036 Madras, India;(2) Department of Physics, Osmania University, 500 134 Hyderabad, India |
| |
| Abstract: | Bi2−x
Pb
x
Sr2Ca2Cu3O
y
superconducting samples with 0<x<0·3 have been synthesized and characterized using X-ray powder diffraction.T
c
and superconducting volume fraction have been measured using a.c. magnetic susceptibility, d.c. electrical resistivity as
well as X-band microwave surface resistance in the normal state. The data indicate the growth of the highT
c
(2223) phase with corresponding reduction of the lowT
c
(2122) phase with increasingx, up to 0·25. Beyond this value ofx there is a slight deterioration of the superconducting behaviour. |
| |
| Keywords: | HighT c superconductors X-ray diffraction d c resistivity a c susceptibility microwave absorption |
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