Electron Paramagnetic Resonance Spectra Observed in Single Crystals of YBa < inf> 2 Cu < inf> 3 O < inf> 7–δ

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Department of Physics


An electron paramagnetic resonance absorption study is conducted on four separately prepared single crystal groups of the superconductor YBa2Cu3O7–δ, each group consisting of from four to six crystalline platelets. This investigation confirms conclusions reached by other regarding the EPR silence of this superconducting oxide while demonstrating that EPR spectroscopy can be used to determine certain properties of superconducting oxides. Such determinations include detection of paramagnetic impurity phases, noninvasive means for determining Tc, and estimating the depth of penetration of a microwave radiation field in these materials. Some comments are provided on the nonresonant, zero field absorption in both, the powders and single crystal platelets.

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Copyright © 1990 WILEY‐VCH Verlag GmbH & Co. KGaA. Publisher’s version of record: https://doi.org/10.1002/pssb.2221570138

Publication Title

physica status solidi (b)