Slab Model Magnetization
This study investigates magnetization behaviors in superconductive materials under varying external fields. It focuses on models such as the Bean model, Yasukochi model, and Kim model, evaluating their effectiveness in predicting internal fields and magnetization, represented by critical current density (Jc) values under different magnetic conditions. Key aspects include the differences between theoretical and practical applications of magnetization, specifically at lower fields and magnetic flux densities. The analysis provides insights into realistic applications and behavior of niobium and other superconductors.
Slab Model Magnetization
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Presentation Transcript
Slab Model Magnetization Bn=Bn-1-jcdx External field gives internal field Magnetization is the difference sum Jc: practically B0=0.25 Realistic Jc Formula with Bc Not necessary good at low field except for low Bc material • g=0: Bean model • g=0.5: Yasukochi model • g=1: Kim model
Bean Model 4 52 55 255 fil.dia(mm) 0.02 jc@12T/0T 3000 gamma 0 bc2 0 half cycle run reset
Kim Model 4 52 55 255 fil.dia(mm) 0.003 jc@12T/0T 2000 gamma 1 bc2 0 half cycle run reset
Conductor Model 4 52 55 255 fil.dia(mm) 0.003 jc@12T/0T 2000 gamma 0.8 bc2 0 half cycle run reset
Half Cycle 4 52 55 255 fil.dia(mm) 0.006 jc@12T/0T 2000 gamma 0.9 bc2 0 half cycle run reset
Niobium Magnetization 4 52 55 255 fil.dia(mm) 0.1 jc@12T/0T 2000 gamma 0.8 bc2 1 half cycle run reset
