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Superconductivity and antiferromagnetism in Cu(2) layers of RBa2Cu3O2

Author

Listed:
  • Felner, I.
  • Bauminger, E.R.
  • Hechel, D.
  • Yaron, U.
  • Nowik, I.

Abstract

The systems Y1-xPrxBa2Cu3Oz with x=0 to 1 and YBa2(Cu1-yMy)3Oz, M Fe and Co, with y=0 to 0.26, and z=6 and 7, doped with 57Fe, have been studied by dc magnetometry to determine the superconducting phase transition temperature and by 57Fe Mössbauer spectroscopy to determine the antiferromagnetic phase transition temperature TN of the Cu(2) site. In those cases where substitution is made out of the CuO2 planes, for z=7, Tc is reduced with increasing the dopant concentration. Antiferromagnetism is found at concentrations where the superconductivity disappears, which means that the materials exhibit either superconductivity or antiferromagnetic order, depending on composition. The phase diagrams obtained are very similar to the well-known oxygen content dependence phase diagram. For z=6, TN changes very little with x or y. There is no conclusive evidence for overlap of superconductivity and antiferromagnetism. For substitution of Zn in the CuO2 plane (Zn) a different behavior is observed. Here the magnetic order is never found in oxygen rich samples, and appears in oxygen poor samples only for y<0.08.

Suggested Citation

  • Felner, I. & Bauminger, E.R. & Hechel, D. & Yaron, U. & Nowik, I., 1990. "Superconductivity and antiferromagnetism in Cu(2) layers of RBa2Cu3O2," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 168(1), pages 229-237.
    • Handle: RePEc:eee:phsmap:v:168:y:1990:i:1:p:229-237
    DOI: 10.1016/0378-4371(90)90373-Z
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