Synthesis and Precise Analysis of Bi2Sr2Can-1CunOy Superconducting Whiskers

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We synthesized Ca-rich Bi-based superconducting whiskers by an Al2O3-seeded glassy quenched platelet method. The grown whiskers were precisely characterized by synchrotron radiation X-ray photoemission spectroscopy and high-resolution transmission electron microscopy. The Ca-rich Bi-based superconducting whiskers show a high critical current density of 2×105A/cm2 at 40K in self-field. We found that excess Ca2+ ions substitute for the Sr2+ sites and cause nano crystalline domains with shorter-period modulation embedded in the base crystalline. The embedded nano crystalline domains can result in structural distorted defects which work as strong pinning center.

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Periodical:

Edited by:

Pietro VINCENZINI, David S. GINLEY, Giovanni BRUNO, Attilio RIGAMONTI and Nikolay ZHELUDEV

Pages:

192-196

DOI:

10.4028/www.scientific.net/AST.75.192

Citation:

H. Tanaka et al., "Synthesis and Precise Analysis of Bi2Sr2Can-1CunOy Superconducting Whiskers", Advances in Science and Technology, Vol. 75, pp. 192-196, 2010

Online since:

October 2010

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$35.00

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