Studying in-situ on the superconducting transition and internal friction of a high T sub c superconductor YBa sub 2 Cu sub 3 O sub 7 minus. delta

Journal Article · Thu Dec 31 23:00:00 EST 1987 · International Journal of Modern Physics B; (United States)

OSTI ID:5339235

Jia-Ju, D; Jian-Yi, J; Xiang, W; Hua-Qing, Y ^[1]

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

This paper reports on the resistance, internal friction and modulus of a high T{sub c} superconductor YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} that were measured in-situ in 80-300 K. Two obvious peaks of internal friction were observed about T{sub c}. On account of character of 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 deficiency of oxygen.

• OSTI ID: 5339235
• Journal Information: International Journal of Modern Physics B; (United States), Journal Name: International Journal of Modern Physics B; (United States) Vol. 1:11; ISSN 0217-9792; ISSN IJPBE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CATIONS
CHARGED PARTICLES
COPPER COMPOUNDS
COPPER IONS
CUPRATES
ELEMENTS
FRICTION
HIGH-TC SUPERCONDUCTORS
IN-SITU PROCESSING
INTERNAL FRICTION
IONS
MECHANICAL PROPERTIES
NONMETALS
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PROCESSING
RELAXATION
STOICHIOMETRY
SUPERCONDUCTORS
TEMPERATURE RANGE
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YOUNG MODULUS
YTTRIUM COMPOUNDS