Temperature Dependence of the EPR Spectra of Gd 0.5 RE 0.5  Ba 2 Cu 3 O 7‐δ  Compounds in the Orthorhombic and Tetragonal Phases | Zendy

Guskos N. | Zendy; Triberis G. P. | Zendy; Lykodimos V. | Zendy; Windsch W. | Zendy; Metz H. | Zendy; Koufoudakis A. | Zendy; Mitros C. | Zendy; GamariSeale H. | Zendy; Niarchos D. | Zendy

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Temperature Dependence of the EPR Spectra of Gd 0.5 RE 0.5 Ba 2 Cu 3 O 7‐δ Compounds in the Orthorhombic and Tetragonal Phases

Author(s) -

Guskos N.,

Triberis G. P.,

Lykodimos V.,

Windsch W.,

Metz H.,

Koufoudakis A.,

Mitros C.,

GamariSeale H.,

Niarchos D.

Publication year - 1991

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221660125

Subject(s) - electron paramagnetic resonance , tetragonal crystal system , polaron , orthorhombic crystal system , spectral line , materials science , ion , phase (matter) , crystallography , condensed matter physics , analytical chemistry (journal) , nuclear magnetic resonance , chemistry , crystal structure , physics , electron , organic chemistry , astronomy , quantum mechanics , chromatography

The materials Gd 0.5 RE 0.5 Ba 2 Cu 3 O 7‐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.

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