X-RAY DIFFRACTION AND ELECTRON PARAMAGNETIC RESONANCE STUDIES OF A Bi4Sr2.5Ca2.5Cu4Ox SUPERCONDUCTING PHASE
Keyword(s):
X Ray
◽
We report a study of a low T c phase of the bismuth superconductor. A nominally Bi 4 Sr 2.5 Ca 2.5 Cu 4 O x compound was produced by the solid state reaction method with a T c = 80 K . X-ray diffraction studies show that the structure is very similar to the structure of the 4:3:3:4 composition with indications of small amounts of other phases. Electron paramagnetic resonance spectroscopy gives a strong Cu 2+ signal at temperatures above T c . We make a comparison between the local symmetry of the Cu 2+ ion complexes in this Bi sample and in the Y–Ba–Cu–O superconductor we had studied before.
1991 ◽
pp. 141-171
◽
2015 ◽
Vol 137
◽
pp. 363-370
◽
1998 ◽
Vol 275-276
◽
pp. 65-72
◽
2015 ◽
Vol 30
(9)
◽
pp. 2024-2024
◽
2016 ◽
Vol 120
(18)
◽
pp. 2815-2823
◽
1995 ◽
pp. 2121-2126
◽
2015 ◽
Vol 30
(7)
◽
pp. 1500-1510
◽
2020 ◽
Vol 54
(6)
◽
pp. 3169-3180
◽