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Temperature Dependence of the EPR Spectra of Gd0.5RE0.5 Ba2Cu3O7‐δ Compounds in the Orthorhombic and Tetragonal Phases

Citation:

Guskos N, Triberis GP, Lykodimos V, Windsch W, Metz H, Koufoudakis A, Mitros C, Gamari‐Seale H, Niarchos D. Temperature Dependence of the EPR Spectra of Gd0.5RE0.5 Ba2Cu3O7‐δ Compounds in the Orthorhombic and Tetragonal Phases. physica status solidi (b) [Internet]. 1991;166:233-240.

Abstract:

The materials Gd0.5RE0.5 Ba2Cu3O7‐δ (Re = Y, Sm, Eu, and La) are investigated in the orthorhombic (HTC) and tetragonal (non‐HTC) phases using EPR method. For both phases EPR signals associated with Gd ions are detected. In the tetragonal phase a strong temperature dependence of the intensities of this line is observed. These characteristics can be ascribed to the skin effect. A small polaron model is proposed to interpret the conduction mechanism of the tetragonal phase (semiconducting) of these samples. Copyright © 1991 WILEY‐VCH Verlag GmbH & Co. KGaA

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