Oxocuprates: A structural and magnetic zoo

Oxocuprates: A structural and magnetic zoo

We have attempted a magnetostructural correlation for the oxocuprates: Y2Cu2O5, BaCuO2, Y2BaCuO5, and YBa2Cu3O6, all of which are closely related to the new high-Tc superconductors. It was found that this series of compounds has interesting combinations of ferro- and antiferromagnetic interactions a...

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Veröffentlicht in:J. Appl. Phys.; (United States) 1988-11, Vol.64 (10), p.5953-5955
Hauptverfasser: Ramakrishna, B. L., Ong, E. W.
Format: Artikel
Sprache:eng
Schlagworte:
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CURIE-WEISS LAW
ELECTRON SPIN RESONANCE
EXCHANGE INTERACTIONS
HIGH TEMPERATURE
INTERACTIONS
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC RESONANCE
MATERIALS SCIENCE
MEDIUM TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWDERS
RESONANCE
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VERY LOW TEMPERATURE
YTTRIUM COMPOUNDS 360204 > Ceramics, Cermets, & Refractories-- Physical Properties
YTTRIUM OXIDES
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Zusammenfassung:We have attempted a magnetostructural correlation for the oxocuprates: Y2Cu2O5, BaCuO2, Y2BaCuO5, and YBa2Cu3O6, all of which are closely related to the new high-Tc superconductors. It was found that this series of compounds has interesting combinations of ferro- and antiferromagnetic interactions as a consequence of the structural and electronic variety of copper. Y2Cu2O5 and Y2BaCuO5 were shown to be chain and layer magnetic systems, respectively. BaCuO2, a complicated 3D structure, has interesting effects of exchange interaction manifested in the temperature-dependent EPR spectrum. YBa2Cu3O6 has been shown to possess a Néel point at 450 K from EPR intensity variation with temperature.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.342161