Voltage response of current carrying Y-Ba-Cu-O tapes to alternating magnetic fields

A. Uksusman, Y. Wolfus, A. Friedman, A. Shaulov, Y. Yeshurun

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Abstract

We present a study of the alternating voltage generated in YBa2 Cu3 O7-δ (YBCO) tapes in response to sinusoidal magnetic fields applied perpendicular to the tapes. The alternating field induces a strongly nonlinear voltage response with various waveforms that drastically change upon changing the bias current, the bias magnetic field, and the amplitude and frequency of the alternating field. In particular, one observes transitions from waveforms including double peaks to waveforms including a single peak in one cycle of the alternating field. We attribute these effects to modulation of the vortex pinning energy by both the alternating magnetic field and the alternating current induced by it. Our model allows separation of these two contributions to the total response, thus revealing the dominating source of the nonlinear response and its accompanied steady component at different experimental conditions.

Original languageEnglish
Article number093921
JournalJournal of Applied Physics
Volume105
Issue number9
DOIs
StatePublished - 2009

Bibliographical note

Funding Information:
This research has been partially supported by the Israel Ministry of National Infrastructures. The authors thank Dr. F. Kopansky and Mr. G. Lukovsky for their technical assistance.

Funding

This research has been partially supported by the Israel Ministry of National Infrastructures. The authors thank Dr. F. Kopansky and Mr. G. Lukovsky for their technical assistance.

FundersFunder number
Israel Ministry of National Infrastructures

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