Abstract
The Anderson–Kim model for a granular superconductor was employed to calculate both temperature and magnetic field dependencies of the AC susceptibility of a Bi-2223 superconductor. Moreover, similar calculations were performed for the magnetization. The prediction of the model, including the intergranular and intragranular contribution, for susceptibilities and magnetizations was consistent with experimental data very well by considering the temperature-dependent effective volume fraction. The temperature-dependence of fitting parameters was shown to obey almost quadratic power relation (1−T/T c)β with β ≈ 2.
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Ozogul, O. The Study on AC Susceptibility and Magnetization of High-T c Superconductor Bi-2223 Using a Critical-State Model. Journal of Superconductivity 17, 513–517 (2004). https://doi.org/10.1023/B:JOSC.0000041789.37349.98
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DOI: https://doi.org/10.1023/B:JOSC.0000041789.37349.98