Neutron measurements on an epitaxial thin film of YBaCuO

We report evidence for an ordered flux line lattice in a 2-μm epitaxial film of YBaCuO from both neutron depolarization and diffraction measurements. Depolarization occurred when field cooling was done normal to the film plane but not within it; this is consistent with frozen-in vortices. Evidence f...

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Bibliographic Details
Published in:Journal of applied physics 1991-11, Vol.70 (10), p.5742-5744
Main Authors: CROW, M. L, PICKART, S. J, NUNES, A. C, MCGUIRE, T. R, GUPTA, A
Format: Article
Language:English
Subjects:
360204 - Ceramics, Cermets, & Refractories- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
Condensed matter: electronic structure, electrical, magnetic, and optical properties
COOLING
COPPER COMPOUNDS
COPPER OXIDES
Exact sciences and technology
HIGH-TC SUPERCONDUCTORS
MATERIALS SCIENCE
NEUTRON SPECTROSCOPY
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
Physics
Properties of type I and type II superconductors
QUATERNARY COMPOUNDS
SPECTROSCOPY
SUPERCONDUCTING FILMS
Superconductivity
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
VORTICES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
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Summary:We report evidence for an ordered flux line lattice in a 2-μm epitaxial film of YBaCuO from both neutron depolarization and diffraction measurements. Depolarization occurred when field cooling was done normal to the film plane but not within it; this is consistent with frozen-in vortices. Evidence for ordering of the flux lines comes from intensity maxima observed in difference patterns between field cooled and zero field cooled conditions.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.350146