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Superconducting Properties of Y 1−x Ca x SrBaCu 2.9 Ga 0.1 O 6+z
Author(s) -
Suryanarayanan R.,
Ouhammou L.,
Leelaprute S.,
Le Nagard N.
Publication year - 1994
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.2221810222
Subject(s) - superconductivity , crystallography , magnetic susceptibility , materials science , chemistry , analytical chemistry (journal) , physics , condensed matter physics , chromatography
The lattice parameters and ac susceptibility of Y 1−x Ca x SrBaCu 2.9 Ga 0.1 O 6+z (x = 0, 0.05, 0.1, and 0.2) are reported. T c decreases as a result of (0.1) Ga substitution from 83 to 67.5 K but increases to 79.5 and 80 K for x = 0.1 and 0.2, respectively. The present data in comparison with those on Al and Co which have been shown to occupy chain sites suggest strongly that Ga also preferentially occupies the chain sites.