Premium
Magnetic and EPR Studies of Oxygenated and Non‐Oxygenated LaBaSrCu 3 O 6+ x Compounds in the Tetragonal Phase
Author(s) -
Guskos N.,
Likodimos V.,
Calamiotou M.,
Kuriata J.,
Wabia M.,
Paraskevas S. M.,
Windsch W.,
Metz H.,
Koufoudakis A.,
Mitros C.,
GamariSeale H.,
Psyharis V.,
Niarchos D.
Publication year - 1993
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.2221800220
Subject(s) - diamagnetism , tetragonal crystal system , electron paramagnetic resonance , paramagnetism , chemistry , phase (matter) , meissner effect , analytical chemistry (journal) , ion , magnetic susceptibility , superconductivity , nuclear magnetic resonance , crystallography , materials science , condensed matter physics , magnetic field , physics , organic chemistry , quantum mechanics
Oxygenated and non‐oxygenated LaBaSrCu 3 O 6+x ceramics in the tetragonal phase are studied using X‐ray, EPR, and magnetic measurements. A Meissner signal for the oxygenated sample corresponding to almost perfect diamagnetism is measured below 35 K. However, EPR data indicate that at least some parts of the sample become superconducting already below 62 K. Magnetic susceptibility of the non‐oxygenated sample exhibit a significant paramagnetic contribution attributed to Cu(1) ions ferromagneticall coupled to the Cu(2) planes.