Local moments, diamagnetism, and time-dependent magnetic response of high-temperature superconductors
The magnetic properties of high-T/sub c/ superconductors RBa/sub 2/ Cu/sub 3/O/sub 7-//sub delta/ with R = Y, Gd were investigated in the temperature range 4.2--300 K. To first order, no interaction was found between superconductivity and paramagnetism in the zero-field-cooled state of the Gd-doped samples: after correction for the Curie--Weiss magnetization, the diamagnetism of these samples is very close to that of the Y-doped samples. This suggests that the superconducting screening of an applied field has little effect on the field seen by the R species. The diamagnetic screening is found to be strongly time dependent due to flux penetration, whereas the magnetic ions see the applied field without delay.
- Research Organization:
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
- OSTI ID:
- 6726301
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 64:10; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CURIE-WEISS LAW
DATA
DIAMAGNETISM
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
EQUIPMENT
EXPERIMENTAL DATA
FLUXMETERS
GADOLINIUM COMPOUNDS
GADOLINIUM OXIDES
INFORMATION
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETISM
MAGNETIZATION
MEASURING INSTRUMENTS
MEDIUM TEMPERATURE
MICROWAVE EQUIPMENT
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PARAMAGNETISM
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES