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Magnetic and transport properties of PrBa2Cu4O8-δ prepared at 1 atm oxygen pressure

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Abstract

Measurements of physical properties were performed on the PrBa2Cu4O8-δ sample prepared by the sol-gel method and sintered in I atm oxygen pressure. Instead of exhibiting superconductivity as for R Y or Gd in the RBa2Cu4O8-δ compound. This compound is unstable, insulating but metallic-like at low temperatures. No superconductivity was observed down to 2 K. Since PrBa2Cu4O8-δ can be re-written as Cu2Ba2PrCu2O8-δ which is a compound of two CuO2-layers and two CuO-chains, the possibility of anomalous Pr antiferromagnetic ordering around 18 K observed from preliminary magnetic data and the effect of oxygen stoichiotmetry parameter δ on the metal-insulator transition are explored.

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Authors and Affiliations

  1. Department of Physics, National Tsing Hua University, Hsinchu, Taiwan 300, R.O.C.

    H. C. Ku, Y. B. You, S. R. Sheen, Y. M. Wan, T. I. Hsu & Y. Y. Hsu

  2. Material Sciences Center, National Tsing Hua University, Hsinchu, Taiwan 300, R.O.C.

    S. R. Sheen

Authors
  1. H. C. Ku
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  2. Y. B. You
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  3. S. R. Sheen
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  4. Y. M. Wan
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  5. T. I. Hsu
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  6. Y. Y. Hsu
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Ku, H.C., You, Y.B., Sheen, S.R. et al. Magnetic and transport properties of PrBa2Cu4O8-δ prepared at 1 atm oxygen pressure. J Low Temp Phys 105, 1463–1468 (1996). https://doi.org/10.1007/BF00753906

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  • DOI: https://doi.org/10.1007/BF00753906

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