High-superconducting critical current densities in YBa sub 2 Cu sub 3 O sub 7 /PrBa sub 2 Cu sub 3 O sub 7 superlattices

Journal Article · Mon Sep 23 00:00:00 EDT 1991 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.106251· OSTI ID:5293527

Jakob, G; Przyslupski, P; Stoelzel, C; Tome-Rosa, C; Walkenhorst, A; Schmitt, M; Adrian, H ^[1]

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1. Institut fuer Festkoerperphysik, Technische Hochschule Darmstadt (Germany)

Well-ordered ((YBa{sub 2}Cu{sub 3}O{sub 7}){sub {ital n}Y}/(PrBa{sub 2}Cu{sub 3}O{sub 7}){sub {ital n}}{sub Pr}){sub {ital m}} superlattices with high superconducting critical temperatures were prepared by sequential reactive dc sputtering. The superconducting critical current density at 4.5 K reaches values as high as 1.1{times}10{sup 7} A/cm{sup 2} for a sample with {ital n}{sub Y} = 2 and {ital n}{sub Pr} = 1 and 3.8{times}10{sup 6} A/cm{sup 2} for {ital n}{sub Y} = 1 and {ital n}{sub Pr} = 3, indicating that the coupling of the CuO{sub 2} layers is not necessary for high-{ital j}{sub {ital c}} values. The angular dependence {ital j}{sub {ital c}}({var phi}) is determined by the component of the magnetic field perpendicular to the {ital a}-{ital b} planes and shows that these superlattices are two-dimensional systems.

• OSTI ID: 5293527
• Journal Information: Applied Physics Letters; (United States), Vol. 59:13; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
CRITICAL CURRENT
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
PRASEODYMIUM OXIDES
SUPERLATTICES
YTTRIUM OXIDES
CRYSTAL STRUCTURE
MAGNETIC FIELDS
SPUTTERING
SYNTHESIS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CURRENTS
ELECTRIC CURRENTS
OXIDES
OXYGEN COMPOUNDS
PRASEODYMIUM COMPOUNDS
RARE EARTH COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
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360202 - Ceramics
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