LOCAL ELECTRONIC STRUCTURE OF DOPING ATOMS IN MA2Can-1CunO2n+3 HIGH-Tc SUPERCONDUCTORS WITH [M-12(n-1)n] TYPE STRUCTURES-Reference-Cited by-同舟云学术

LOCAL ELECTRONIC STRUCTURE OF DOPING ATOMS IN MA2Can-1CunO2n+3 HIGH-Tc SUPERCONDUCTORS WITH [M-12(n-1)n] TYPE STRUCTURES

Published:2002-04 Issue:02 Volume:09 Page:1345-1349
ISSN:0218-625X
Container-title:Surface Review and Letters
language:en
Short-container-title:Surf. Rev. Lett.

Author:

KURMAEV E. Z.¹,MOEWES A.²,ZHIGADLO N. D.³⁴,TAKAYAMA-MUROMACHI E.³,NEKRASOV I. A.⁵,BUREEV O. A.⁵,WOODS G. T.⁶,CALLCOTT T. A.⁶,YARMOSHENKO YU. M.¹,SHAMIN S. N.¹,EDERER D. L.⁷,YANAGIHARA M.⁸

Affiliation:

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

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

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

4. Institute of Solid State and Semiconductor Physics, P. Brovki Str. 17, 220072, Belarus

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

6. University of Tennessee, Knoxville, Tennessee 37996, USA

7. Department of Physics, Tulane University, New Orleans, LA 70118, USA

8. Research Institute for Scientific Measurements, Tohoku University, Sendai 980-77, Japan

Abstract

Results of X-ray fluorescence measurements of MA 2 Ca n-1 Cu n O 2n + 3 compounds with [ M -12(n-1)n] type structures, ( C 0.8 N 0.2 Sr 2 CuO 5.3, [ Cu 0.25 (C,N) 0.75] Sr 2 CaCu 2 O y, Cu 0.5 V 0.5 Sr 2 CaCu 2 O 7.5, Cu 0.5 V 0.5 Sr 2 Ca 2 Cu 3 O 9.4, Cu 0.5 V 0.5 Sr 2( Ca 3.6 Sr 0.4) Cu 5 O 13.5 and Cu 0.5 V 0.5 Sr 2( Ca 4.7 Sr 0.3) Cu 6 O 15.3, are presented. The experiments show that C-atoms form a distorted CO 3 oxyacid group with a partial substitution of copper and nitrogen atoms in the M-sites. We conclude that the CO 32- group in (C,N) Sr 2 Ca n-1 Cu n O y and (Cu,C,N) Sr 2 Ca n-1 Cu n O y is substituted by the NO 2- which induces the creation of the hole carriers in these compounds. We have found that V-atoms in the given compounds form ( VO 4)3- tetrahedrons and have a pentavalent state.

Publisher

World Scientific Pub Co Pte Lt

Subject

Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0218625X02003780

Reference15 articles.

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