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EPR Spectrum of the High-Temperature Superconductor $YBa_2Cu_3O_{7-x}$ Doped with Ytterbium

  • Hwang Sonjong (Department of Chemistry, Sogang University) ;
  • So Hyunsoo (Department of Chemistry, Sogang University)
  • Published : 19890200
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Abstract

EPR spectra of the high-temperature superconductor YBa_2Cu_3O_{7-x}$ doped with ytterbium have been measured at 77-300K. The superconducting, orthorhombic phase shows a spectrum at g = 2.08 (Spectrum O). As the temperature is lowered, another line ascribable to $Yb^{3+}$ grows gradually at g = 3.31. The intensity of Spectrum O was determined using Yb as the internal reference. The semiconducting, tetragonal phase shows a spectrum at g = 2.06 (Spectrum T), different from Spectrum O. The origins of these spectra are discussed.

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References

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Cited by

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