Analytical Study of AC Magnetic Susceptibility of (Bi, Pb) Sr-Ca-Cu-O Superconducting Systems Using Bean Critical State Model
Keywords:
BPSCCO, χac, critical state, Bean modelAbstract
AC magnetic susceptibility, χac, as a function of temperature, T, and applied field amplitude, H, of (Bi1.6Pb0.4)Sr2Ca2Cu3Oβ and (Bi1.7Pb0.3)Sr2Ca2Cu3Oγ superconducting systems was analyzed using Bean critical state model. The critical temperature and grain volume fraction of specimens were utilized from the real part of AC susceptibility measurements, while the pinning force density was utilized from the imaginary part of the susceptibility measurements. Calculations using Mathematica program indicated that (Bi1.6Pb0.4)Sr2Ca2Cu3Oβ superconductor of nominal composition (2234), prepared by solid reaction with an intermediate ground and pressed, provided the biggest hysteresis area, and the calculated χac(H,T) results were comparable with the experimental χac(H,T) data.
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online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
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