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Zero resistance near 80. Kappa. in the bismuth lead cuprates Pb/sub 2-chi/Bi/sub chi/Sr/sub 2/(YCa)/sub 1/Cu/sub 3/O/sub 8/

Journal Article · · Modern Physics Letters B; (USA)
; ; ;  [1]
  1. Laboratoire de Cristallographie et Sciences des Materiaux, I.S.M. Ra, Bd du Marechal Juin, 14032 Caen Cedex (FR)
New superconductors Pb/sub 2-chi/Bi/sub chi/Sr/sub 2/Y/sub 1-chi/Ca/sub chi/Cu/sub 3/O/sub 8/ (0{le}chi{le}0.60) and Pb/sub 2-chi/Bi/sub chi/Bki/sub chi/Sr/sub 2/Y/sub 1-chi/Ca/sub y/Cu/sub 3/O/sub 8/ (chi = 0.6, y = 0.5 and y + 1) have been isolated. They are isostructural with Pb/sub 2/Sr/sub 2/Y/sub 0.5/Cu/sub 3/O/sub 8/. Their structure consists of a double intergrowth of oxygen deficient perovskite layers (ACuO/sub 3-chi/)/sub m/(A'O)/sub n/ (m = 1.5, n = 1), with A = Bi, Ca, Pb, Sr, Y and A' = Bi, Pb, Sr. The superconducting properties of this phase are greatly improved with respect to Pb/sub 2/Sr/sub 2/Y/sub 0.5/Cu/sub 3/O/sub 8/ (T/sub c/ = 46 {Kappa}), since a T/sub c/ of 79 K (zero resistance) can be reached.
OSTI ID:
5612570
Journal Information:
Modern Physics Letters B; (USA), Journal Name: Modern Physics Letters B; (USA) Vol. 3:7; ISSN MPLBE; ISSN 0217-9849
Country of Publication:
United States
Language:
English

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