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Heavy ion irradiation effects on magnetic field dependent rf losses in Bi2212 single crystals

Sudershan, YS and Rastogi, A and Bhat, SV and Grover, AK and Yamaguchi, Y and Oka, K and Nishihara, Y and Senapati, L (1996) Heavy ion irradiation effects on magnetic field dependent rf losses in Bi2212 single crystals. In: of 8th IWCC: 8th International Workshop on Critical Currents in Superconductors, 27-29 May 1996, Kitakyushu, Japan, pp. 231-2324.

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We have studied the magnetic field dependent non-resonant rf losses in as-grown Bi2212 single crystals prior to and after irradiation with 250 MeV $^{107}Ag^{17+}$ ions. In the pristine state the losses from the inter-unit cell and intra-unit cell weak links are identified. The interesting feature is that the losses from inter-unit cell weak links reappear as the columnar tracks age with time suggesting that temperature cycling and thermal effects have important consequences on the robustness of the tracks. The losses from the intra-unit cell weak links although suppressed after irradiation, disappear suddenly at a certain temperature below Tc. This is unlike in the pristine state where the losses decrease smoothly as the temperature is decreased

Item Type: Conference Paper
Publisher: World Scientific
Additional Information: Copyright of this article belongs to World Scientific.
Keywords: bismuth compounds;calcium compounds;eddy current losses;high temperature superconductors;ion beam effects;Josephson effect;strontium compounds
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 03 Sep 2007
Last Modified: 10 Jan 2012 07:15
URI: http://eprints.iisc.ac.in/id/eprint/10799

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