Accession Number : ADA190713
Title : Magnetic Anomalies in the Rare Earth Oxide Superconductors GdBa2Cu3O(7-x) and YbBa2Cu3O(7-x).
Descriptive Note : Technical rept.,
Corporate Author : NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF CHEMISTRY
Personal Author(s) : Hatfield, William E ; Rohrs, Brian R ; Kirk, Martin L ; Helms, Jeffrey H ; Ro, Hyekyeong
PDF Url : ADA190713
Report Date : 09 Jan 1988
Pagination or Media Count : 12
Abstract : The magnetic properties of GdBa2Cu3O(7-X) and YBa2Cu3O(7-X) have been studied in low applied magnetic field by using pelleted sample. The magnetic behavior may be explained by the occurrence of a spin-glass state due to a granular superconductor. The model assumes superconducting grains which are small compared to the penetration depth, and these are coupled into closed loops. Cooling in zero-field, followed by the application of a field at a fixed temperature produces a metastable state resulting in frustration and spin-glass behavior. Keywords: Superconductivity, Yttrium, Barium, Copper, Ceramic oxide, Perovskite, Gadlinium, Meissner effects, Spin glass.
Descriptors : *BARIUM, *CERAMIC MATERIALS, *MAGNETIC PROPERTIES, *OXIDES, *SUPERCONDUCTIVITY, *YTTRIUM, COOLING, COPPER, DEPTH, GLASS, LOOPS, MAGNETIC ANOMALIES, MAGNETIC FIELDS, METASTABLE STATE, PENETRATION, SPINNING(MOTION), TEMPERATURE
Subject Categories : Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE