Published 1987 | Version v1
Book Metadata-only

Superconductivity in YBa/sub 2/Cu/sub 3/O/sub chi/ for chi greater than 7.0

Creators

  • 1. Dept. of Chemistry, Univ. of California - Berkeley, Berkeley, CA (USA)

Description

The effect of oxygen stoichiometry on the magnetic properties of YBa/sub 2/Cu/sub 3/O/sub chi/ has been studied for chi ≥ 7.0. The oxygen content of the samples was determined using temperature-programmed desorption (TPD) and temperature-programmed reduction (TPR). For chi = 7.1, the material exhibited a sharp diamagnetic transition with an onset temperature of 90 K and a transition width of 10 K (10% - 90%). The magnitude of the Meissner effect for the YBa/sub 2/Cu/sub 3/O/sub 7.1/ sample was 28% at 5 K. When chi was increased to 7.2, the diamagnetic transition became broader and the magnitude of the Meissner effect decreased, but the onset temperature remained constant

Additional details

Publishing Information

Publisher
American Chemical Society.
Imprint Place
Washington, DC (USA)
ISBN
0-8412-1431-X
Imprint Title
Chemistry of high-temperature superconductors
Journal Page Range
p. 114-121.

Conference

Title
Symposium on the chemistry of high temperature superconductors.
Dates
30 Aug - 4 Sep 1987.
Place
New Orleans, LA (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
19092031
Subject category
S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BARIUM COMPOUNDS; COPPER OXIDES; DESORPTION; DIAMAGNETISM; MEISSNER-OCHSENFELD EFFECT; OXYGEN; REDUCTION; STOICHIOMETRY; SUPERCONDUCTIVITY; TEMPERATURE DISTRIBUTION; YTTRIUM COMPOUNDS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; MAGNETISM; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; TRANSITION ELEMENT COMPOUNDS