SYNTHESIS, STRUCTURE AND SUPERCONDUCTIVITY OF (HG1-YTIY)SR-2(CA1-XYX)CU2OZ

Authors
KANDYEL E KAMIYAMA T ASANO H ABOUSEKKINA M
Citation
E. Kandyel et al., SYNTHESIS, STRUCTURE AND SUPERCONDUCTIVITY OF (HG1-YTIY)SR-2(CA1-XYX)CU2OZ, Physica. C, Superconductivity, 291(1-2), 1997, pp. 97-103
Citations number
18
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
291
Issue
1-2
Year of publication
1997
Pages
97 - 103
Database
ISI
SICI code
0921-4534(1997)291:1-2<97:SSASO(>2.0.ZU;2-O
Abstract
Sr-bearing Hg-based cuprates (Hg1-yTiy)Sr-2(Ca1-xYx)Cu2Oz with Ti on t he Hg site have been successfully prepared. X-ray Rietveld refinement of the structure for the O-2-annealed sample with nominal composition of y = 0.25 and x = 0.50 is carried out based on tetragonal space grou p P4/mmm. The refined chemical composition is (Hg0.59Ti0.41)Sr-2(Ca0.3 2Y0.68)Cu2O6.66. Superconducting properties of the as-prepared samples have been improved after O-2 annealing, the highest onset T-c of 100 K is obtained in the O-2-annealed sample with y = 0.25 and x = 0.35. ( C) 1997 Published by Elsevier Science B.V.