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LOCAL ELECTRONIC STRUCTURE OF DOPING ATOMS INMA2Can-1CunO2n+3HIGH-TcSUPERCONDUCTORS WITH[M-12(n-1)n]TYPE STRUCTURES

Author

Listed:
  • E. Z. KURMAEV

    (Institute of Metal Physics, Russian Academy of Sciences–Ural Division, 620219 Yekaterinburg GSP-170, Russia)

  • A. MOEWES

    (Department of Physics and Engineering Physics, University of Saskatchewan,116 Science Place Saskatoon, Saskatchewan S7N 5E2, Canada)

  • N. D. ZHIGADLO

    (National Institute for Research in Inorganic Materials (NIRIM), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan;
    Institute of Solid State and Semiconductor Physics, P. Brovki Str. 17, 220072, Belarus)

  • E. TAKAYAMA-MUROMACHI

    (National Institute for Research in Inorganic Materials (NIRIM), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan)

  • I. A. NEKRASOV

    (Department of Theoretical Physics and Applied Mathematics, Ural State Technical University, USTU-UPI, 19 Mira Str., Yekaterinburg 620002, Russia)

  • O. A. BUREEV

    (Department of Theoretical Physics and Applied Mathematics, Ural State Technical University, USTU-UPI, 19 Mira Str., Yekaterinburg 620002, Russia)

  • G. T. WOODS

    (University of Tennessee, Knoxville, Tennessee 37996, USA)

  • T. A. CALLCOTT

    (University of Tennessee, Knoxville, Tennessee 37996, USA)

  • YU. M. YARMOSHENKO

    (Institute of Metal Physics, Russian Academy of Sciences–Ural Division, 620219 Yekaterinburg GSP-170, Russia)

  • S. N. SHAMIN

    (Institute of Metal Physics, Russian Academy of Sciences–Ural Division, 620219 Yekaterinburg GSP-170, Russia)

  • D. L. EDERER

    (Department of Physics, Tulane University, New Orleans, LA 70118, USA)

  • M. YANAGIHARA

    (Research Institute for Scientific Measurements, Tohoku University, Sendai 980-77, Japan)

Abstract

Results of X-ray fluorescence measurements ofMA2Can-1CunO2n + 3compounds with[M-12(n-1)n]type structures, (C0.8N0.2Sr2CuO5.3,[Cu0.25(C,N)0.75]Sr2CaCu2Oy,Cu0.5V0.5Sr2CaCu2O7.5,Cu0.5V0.5Sr2Ca2Cu3O9.4,Cu0.5V0.5Sr2(Ca3.6Sr0.4)Cu5O13.5andCu0.5V0.5Sr2(Ca4.7Sr0.3)Cu6O15.3, are presented. The experiments show that C-atoms form a distortedCO3oxyacid group with a partial substitution of copper and nitrogen atoms in the M-sites. We conclude that theCO32-group in (C,N)Sr2Can-1CunOyand (Cu,C,N)Sr2Can-1CunOyis substituted by theNO2-which induces the creation of the hole carriers in these compounds. We have found that V-atoms in the given compounds form(VO4)3-tetrahedrons and have a pentavalent state.

Suggested Citation

  • E. Z. Kurmaev & A. Moewes & N. D. Zhigadlo & E. Takayama-Muromachi & I. A. Nekrasov & O. A. Bureev & G. T. Woods & T. A. Callcott & Yu. M. Yarmoshenko & S. N. Shamin & D. L. Ederer & M. Yanagihara, 2002. "LOCAL ELECTRONIC STRUCTURE OF DOPING ATOMS INMA2Can-1CunO2n+3HIGH-TcSUPERCONDUCTORS WITH[M-12(n-1)n]TYPE STRUCTURES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 9(02), pages 1345-1349.
    • Handle: RePEc:wsi:srlxxx:v:09:y:2002:i:02:n:s0218625x02003780
    DOI: 10.1142/S0218625X02003780
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