We studied magnetic levitation forces for bulk superconductors through numerical analysis. We virtually varied the superconducting junctions between domains formed through multiple seeding (four seeds) and investigated the effect of the following parameters on the magnetic levitation force: (1) the critical current density J _c across grain boundaries (GBs) or superconducting junctions between crystal domains. J _c across GBs was varied from 0% to 100% of the base material’s J _c and (2) the depth of the insulation phase (0% of the base material’s J _c ) formed between domains. For parameters in (a), we found that in the presence of superconducting junctions between crystal domains with less than 50% for the ratio of J _c to the base materials’ J _c , the magnetic levitation force decreased significantly under the conditions where the superconducting bulk and the permanent magnet face each other like this study. Furthermore, for 100% of the base J _c , the largest levitation force was generated by the first layer (0–1 mm thick), while with a reduced superconducting junction (25% of J _c to 0% of J _c ), the deeper layers also contributed to the levitation force. For the parameters in (2), even a thin insulation phase layer between crystal domains significantly affected the magnetic levitation force, and different bulk layers (each 1 mm thick) below the insulation phase showed different levels of contribution to the levitation force.

我们通过数值分析研究了体超导体的磁悬浮力。我们实际上改变通过多播而形成结构域之间的超导结（4个种子）并调查了以下参数对磁悬浮力的作用：（1）临界电流密度Ĵ _Ç跨越晶界（GBS）或晶体之间超导结域。GB 上的J _c从基材J _{c 的}0% 到 100% 不等，(2) 绝缘相的深度（基材J _{c 的}0% ) 在域之间形成。对于参数（a），我们发现，在小于50％的超导晶体域之间结，以之比的存在Ĵ _Ç到基体材料Ĵ _Ç，磁悬浮力的条件下显著下降，其中所述超导像这项研究一样，大块和永磁体彼此面对。此外，对于基体的100％Ĵ _Ç，是由第一层（0-1毫米厚）所产生的最大悬浮力，而具有减小的超导结（25％Ĵ _Ç至0％Ĵ _Ç )，更深的层也有助于悬浮力。对于（2）中的参数，即使是晶畴之间的薄绝缘相层也会显着影响磁悬浮力，绝缘相下方的不同体层（每 1 mm 厚）对悬浮力的贡献程度不同。