Imaging of magnetic flux distribution in vicinity of insulating particles in high-T c superconductor by electron holography

REBaCuO (RE: rare earth) bulk superconductors, whose microstructures can be controlled by quench and melt growth (QMG) processing, have a high critical current density J c , which makes them well suited for use in practical applications. Through a combination of electron holography and a focused ion...

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Bibliographic Details
Published in:Journal of applied physics 2012-02, Vol.111 (3), p.033912-033912-5
Main Authors: Akase, Zentaro, Kasai, Hiroto, Mamishin, Shuichi, Shindo, Daisuke, Morita, Mitsuru, Tonomura, Akira
Format: Article
Language:English
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Summary:REBaCuO (RE: rare earth) bulk superconductors, whose microstructures can be controlled by quench and melt growth (QMG) processing, have a high critical current density J c , which makes them well suited for use in practical applications. Through a combination of electron holography and a focused ion-beam technique, we succeeded in visualizing a fluxon pinned by an insulating particle in a QMG bulk Y-Ba-Cu-O superconductor. We also clarified the magnetic flux distribution in the vicinity of the insulating particles at different temperatures in a uniform external magnetic field.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3682468