Radio frequency-SQUID effect in YNi2B2C due to natural grain boundary weak links

Khare, Neeraj ; Gupta, A. K. ; Khare, Sangeeta ; Gupta, L. C. ; Nagarajan, R. ; Hossain, Z. ; Vijayaraghavan, R. (1996) Radio frequency-SQUID effect in YNi2B2C due to natural grain boundary weak links Applied Physics Letters, 69 (10). pp. 1483-1485. ISSN 0003-6951

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Official URL: http://apl.aip.org/resource/1/applab/v69/i10/p1483...

Related URL: http://dx.doi.org/10.1063/1.116915

Abstract

We report the observation of radio frequency-superconducting quantum interference device (rf-SQUID) effect due to natural grain boundary weak links in a bulk sample of a YNi2B2C superconductor at 4.2 K, confirming that the superconducting grains are coupled at the grain boundaries through Josephson effect. Periodic oscillations in voltage-flux characteristic due to rf-SQUID effect have been clearly observed at 4.2 K when the driving rf frequency was kept slightly away from the resonance frequency of the tank circuit. Phase reversal in the voltage-flux characteristics on changing the rf frequency has been observed. Noise spectrum of the YNi2B2C bulk rf-SQUID is also reported.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Superconductors; Squid Devices; Yttrium Carbides; Nickel Carbides; Borides; Grain Boundaries; Weak Links; Josephson Effect; Magnetic Flux
ID Code:24190
Deposited On:29 Nov 2010 10:14
Last Modified:02 Jun 2011 06:06

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