In situ study on the superconducting transition and internal friction of the high T sub c superconductor YBa sub 2 Cu sub 3 O sub 7 minus. delta

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Chinese Physics; (USA)

OSTI ID:5212473

Jiaju, Du; Jianyi, Jiang; Xiang, Wang; Huaqing, Yin ^[1]

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1. Institute of Solid State Physics, Academia Sinica, Hefei (CN)

The resistance, internal friction and Young's modulus of the high {ital T}{sub {ital c}} superconductor YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} were measured {ital in} {ital situ} in 80--300 K. Two obvious peaks of internal friction were observed near {ital T}{sub {ital c}}. On account of the character of the peaks, it is suggested that these two peaks are associated with the electronic relaxation between Cu{sup 3+} and Cu{sup 2+}. The peak and anomalies of Young's modulus observed in the range between 160 K and 280 K may be related to the adjustment of the deficiency of oxygen.

• OSTI ID: 5212473
• Journal Information: Chinese Physics; (USA), Journal Name: Chinese Physics; (USA) Vol. 9:4; ISSN CHPHD; ISSN 0273-429X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FRICTION
INTERNAL FRICTION
LOW TEMPERATURE
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YOUNG MODULUS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES