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ChemInform Abstract: Superconducting LnNi2B2C (Ln: Y, Lu) Nanoparticles: Size Effects and Weak Links.

✍ Scribed by W. K. MASER; P. BERNIER; I. LUK'YANCHUK; P. MOLINIE; S. LEFRANT; P. REDLICH; P. M. AJAYAN

Publisher: John Wiley and Sons
Year: 2010
Weight: 29 KB
Volume: 28
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199728015

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✦ Synopsis

Superconducting LnNi2B2C (Ln: Y, Lu) Nanoparticles: Size Effects and Weak Links.

-Nanoparticles of the title superconductors of particle diameters ranging from 2-10 nm embedded in a glassy carbon matrix are prepared by the carbon arc-discharge technique. Magnetic measurements in the temperature range 4.5-25 K reveal transitions into the superconducting state below Tc values of 15 and 16 K for Ln: Y and Lu, respectively. The observed low-field hysteresis effects of the material are related to the appearance of weak Josephson links between the superconducting nanocrystallites mediated by the carbon mixture. -(MASER, W.

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