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THE INFLUENCE OF Pr-Ca SUBSTITUTION ON PHASE FORMATION, MICROSTRUCTURE AND OXYGEN CONTENT IN YBCO BULK SAMPLES

A. Stoyanova-Ivanova1,* , S. Terzieva1, K. Zalamova1, Ch. Angelov2, A. Zahariev1, H. Ignatov3, V. Kovachev1

Affiliation

  1. Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
  2. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
  3. University of Chemical Technology and Metallurgy, 8 Kl. Ohridski, 1756 Sofia, Bulgaria

Abstract

We have investigated Pr and Ca substitution for Y in Y1-yPryBa2Cu3Oz and Y1-(x+y)CaxPryBa2Cu3Oz bulk samples, where x = 0.25; 0.30 and y = 0.04; 0.05. The effects of this substitution on the phase formation, microstructure and oxygen content in these samples were studied. The observed dependences are discussed..

Keywords

Pr, Ca substitution, Total oxygen content (z), Non-stoichiometric oxygen parameter (δ ).

Submitted at: Dec. 9, 2004
Accepted at: Jan. 26, 2005

Citation

A. Stoyanova-Ivanova, S. Terzieva, K. Zalamova, Ch. Angelov, A. Zahariev, H. Ignatov, V. Kovachev, THE INFLUENCE OF Pr-Ca SUBSTITUTION ON PHASE FORMATION, MICROSTRUCTURE AND OXYGEN CONTENT IN YBCO BULK SAMPLES, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 1, pp. 431-434 (2005)