By Topic

MHz band impedance analysis of oxide superconductors [YBCO]

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Hoshino, T. ; Dept. of Electr. Eng., Saga Univ., Honjo, Japan ; Muta, I. ; Tanakamaru, Y.

Oxide superconductors were investigated by measuring their MHz band impedances. Impedance measurements were performed at 77 K and room temperature. With increase of frequency, impedance at 77 K increased from zero values at 100 kHz. The impedance locus had almost the same form as that for measurements at room temperature, except its starting point. As the density of the specimen increases, the impedance locus changes its form and moves in the clockwise direction. An equivalent circuit is proposed. By a close examination of frequency characteristics at room temperature, a singular frequency was observed which corresponds to the pinning frequency at 77 K. It is concluded that the proposed complex impedance measurement makes it possible to evaluate the material density and the critical current density of oxide superconductors at room temperature

Published in:

Magnetics, IEEE Transactions on  (Volume:28 ,  Issue: 1 )