Journal of Superconductivity

, Volume 13, Issue 6, pp 877–881 | Cite as

Influence of Sr Substitution on Structure, Hole Concentration in CuO2 Planes, and Irreversibility Line in (Hg,Pb)(Ba,Sr)2Ca2Cu3O8+δ Single Crystals

  • J. Karpinski
  • S. M. Kazakov
  • M. Angst
  • H. Schwer
  • A. Wisniewski
  • R. Puzniak

Abstract

Single crystals of HgBa2Ca2Cu3O8+δ compound with partial substitution of Sr and Pb have been grown at high gas pressure. Bond valence sum calculations show that the substitution of Sr for Ba leads to a more homogeneous distribution of holes between nonequivalent CuO2 planes. In nonsubstituted crystals, the density of holes is significantly higher in the inner CuO2 planes. The irreversibility field increases on Sr substitution. The thickness of the charge reservoir decreases with Sr substitution by 0.7 Å.

single crystals HgBa2Ca2Cu3O8+δ high pressure substitutions irreversibility line 

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Copyright information

© Plenum Publishing Corporation 2000

Authors and Affiliations

  • J. Karpinski
    • 1
  • S. M. Kazakov
    • 1
  • M. Angst
    • 1
  • H. Schwer
    • 1
  • A. Wisniewski
    • 2
  • R. Puzniak
    • 2
  1. 1.Solid State Physics LaboratoryZürichSwitzerland
  2. 2.Institute of PhysicsPolish Academy of SciencesWarsawPoland

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