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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 10, Number 1
BKCSDE 10(1)
January 20, 1989 

EPR Spectrum of the High-Temperature Superconductor YBa2Cu3O7-x Doped with Ytterbium
Sonjong Hwang, Hyunsoo So*
EPR spectra of the high-temperature superconductor YBa2Cu3O7-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 Yb3+ 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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