Flux pinning in hot isostatically pressed Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub [ital x]]

Magnetic hysteresis data were taken from 4.2 to 35 K on Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub [ital x]] samples that were hot isostatically pressed at 105 MPa in an inert atmosphere at 825 [degree]C. One set of samples was pressed for only 15 min while the other was pressed for 120 min. The samples pre...

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Bibliographic Details
Published in:Applied physics letters 1992-12, Vol.61:23
Main Authors: Miller, D.J., Sengupta, S., Hettinger, J.D., Shi, D., Gray, K.E., Nash, A.S., Goretta, K.C.
Format: Article
Language:English
Subjects:
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CURRENTS
DEFECTS
DISLOCATIONS
ELECTRIC CURRENTS
FABRICATION
HIGH-TC SUPERCONDUCTORS
HOT PRESSING
HYSTERESIS
LINE DEFECTS
MAGNETIC FLUX
MATERIALS SCIENCE
MATERIALS WORKING
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PRESSING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS 360207 > Ceramics, Cermets, & Refractories-- Superconducting Properties-- (1992-)
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Summary:Magnetic hysteresis data were taken from 4.2 to 35 K on Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub [ital x]] samples that were hot isostatically pressed at 105 MPa in an inert atmosphere at 825 [degree]C. One set of samples was pressed for only 15 min while the other was pressed for 120 min. The samples pressed for 15 min contained a high density of dislocations and planar faults, while the samples pressed for 120 min contained fewer dislocations and faults, with most dislocations present within subgrain boundaries. The samples with the complex dislocation/planar fault structures exhibited substantially larger hysteresis loops, suggesting enhanced flux pinning.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.108049