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The 130 K Transition in Bi Oxides Heavily Doped by Iron Phthalocyanine Superconductivity versus Magnetism
Author(s) -
Grigoryan L.,
Yakushi K.,
Chakravarty N.
Publication year - 1995
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221870119
Subject(s) - magnetism , superconductivity , magnetization , condensed matter physics , electrical resistivity and conductivity , doping , materials science , phthalocyanine , transition temperature , microwave , transition metal , magnetic field , chemistry , nanotechnology , physics , catalysis , quantum mechanics , biochemistry
The observation and detailed investigation of the highly reproducible transition with onset at 130 K are reported in samples of Bi oxides (both 2212 and 2223 systems) doped with iron phthalocyanine, involving effects of temperature, magnetic field, and chemical composition on dc magnetization and microwave absorption spectra of the samples. The experimental magnetic data are suggestive of a superconducting nature of the transition; however, no reliable electrical resistivity drop is observed at 130 K to confirm the occurrence of superconductivity.