محاسبات سه بعدی چگالی میدان مغناطیسی استوانه ی محدود تو خالی ابررسانا در یک میدان مغناطیسی محوری

Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_JITF-2-2_003

تاریخ نمایه سازی: 1 مرداد 1399

Abstract:

In this study, a set of self-consistent coupled-integral equations for the local magnetic flux and current distributions in a finite superconducting hollow cylinder under an axial magnetic field has been directly derived by using the Biot-Savart law within the framework of the critical-state model. The equations were first solved numerically in the three-dimensional space before obtaining the hysteresis loops for the Kim and Exponential models. We haveassumed the contribution of the flux penetration from the inner surface of the sample to be higher than that of other surfaces. It is found that the variation in the area of lateral surface changes the magnitude of the magnetic moment of the finite hollow cylinder in the applied magnetic field. The obtained results are in good agreement with calculates. The formalism presented here can be used for an arbitrary shape of the superconducting system in the presence of any magnetic field dependence of the critical current density in an external magnetic field of arbitrary direction.

Authors

Batool Mohammadzadeh-Dehsorkh

Department of Physics, Faculty of Science, University of Qom, Qom ۳۷۱۶۱۴۶۶۱۱, Iran