A STRUCTURAL STUDY OF CHEMICAL-STABILITY OF (Y1-XCAX)(BA2-XLAX)CU3O7-DELTA (X=0.0, 0.2, AND 0.4)

Authors
RAJAGOPAL H SEQUEIRA A GANGULY R YAKHMI JV
Citation
H. Rajagopal et al., A STRUCTURAL STUDY OF CHEMICAL-STABILITY OF (Y1-XCAX)(BA2-XLAX)CU3O7-DELTA (X=0.0, 0.2, AND 0.4), Journal of superconductivity, 9(6), 1996, pp. 615-618
Citations number
17
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter
Journal title
Journal of superconductivity → ACNP
ISSN journal
08961107
Volume
9
Issue
6
Year of publication
1996
Pages
615 - 618
Database
ISI
SICI code
0896-1107(1996)9:6<615:ASSOCO>2.0.ZU;2-J
Abstract
Neutron structural studies are made on (Y1-xCax)(Ba2-xLax)Cu3O7-delta for compositions corresponding to x = 0.0, 0.2, and 0.4 in order to ev aluate any correlation between the remarkably high chemical stability of the cosubstituted samples (x = 0.2 and 0.4) and the structural para meters. It is suggested that the increased chemical stability is cause d by a decrease in the puckering of the Cu-O planes with increase in x , causing them to flatten, which leads to a reduction in the internal stresses existing in the perovskite lattice of this technologically im portant material.