Published July 1, 1992 | Version v1
Journal article Metadata-only

The magnetic moment relaxation in oxygen-deficient YBa2Cu3Ox

Creators

  • 1. Lab. voor Vaste Stof-Fysika en Magnetisme, Katholieke Univ. Leuven (Belgium)

Description

The magnetic moment relaxation in polycrystalline YBa2Cu3Ox material has been studied using zero-field-cooled measurements. The temperature dependence of the relaxation rate shows field-dependent maximum. When the oxygen content is reduced, the maximum shifts towards lower temperatures. This shift is directly related to a decrease of the intragrain critical current density in the oxygen-deficient material, inducing a decrease of the field H* for complete flux penetration. The characteristic activation energies for depinning in the oxygen-deficient material are below 20 meV. (orig.)

Additional details

Publishing Information

Journal Title
Physica. C, Superconductivity
Journal Volume
197
Journal Issue
1/2
Series
Phys., C Supercond.
Journal Page Range
9-14
ISSN
0921-4534
CODEN
PHYCE

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
23085926
Subject category
S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
Descriptors DEI
ACTIVATION ENERGY; BARIUM OXIDES; COPPER OXIDES; CRITICAL CURRENT; DIFFUSION LENGTH; GRAIN BOUNDARIES; HIGH-TC SUPERCONDUCTORS; HYSTERESIS; IRREVERSIBLE PROCESSES; MAGNETIC FIELDS; MAGNETIC MOMENTS; MAGNETIZATION; OXYGEN; POLYCRYSTALS; QUATERNARY COMPOUNDS; RELAXATION; RELAXATION TIME; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; TEMPERATURE RANGE 0013-0065 K; TEMPERATURE RANGE 0065-0273 K; YTTRIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; AMINES; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTAL STRUCTURE; CRYSTALS; CURRENTS; ELECTRIC CURRENTS; ELEMENTS; ENERGY; MAGNETIC PROPERTIES; MICROSTRUCTURE; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS