New superconducting cuprate perovskites

Ten new superconducting cuprate perovskites with Tc's above 77 K are reported. The highest Tc of the new group, and for any superconductor, is observed in Ba2Eu(0.9)Y(0.1)Cu3Ox which has a resistive midpoint of 94.5 K with a width of 0.7 K. Miessner-effect and ac-susceptibility measurements ind...

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Bibliographic Details
Published in:Physical review letters 1987-05, Vol.58 (18), p.1888-1890
Main Authors: Murphy, DW, Sunshine, S, van Dover RB, Cava, RJ, Batlogg, B, Zahurak, SM, Schneemeyer, LF
Format: Article
Language:English
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Summary:Ten new superconducting cuprate perovskites with Tc's above 77 K are reported. The highest Tc of the new group, and for any superconductor, is observed in Ba2Eu(0.9)Y(0.1)Cu3Ox which has a resistive midpoint of 94.5 K with a width of 0.7 K. Miessner-effect and ac-susceptibility measurements indicate bulk superconductivity in these materials. Each of these cuprates has a two-to-one ratio of divalent to trivalent ion on the A site of the perovskite-type structure. (Author)
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.58.1888