• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica, C. Superconductivity and its applications >MAGNETIZATION STUDY OF SUPERCONDUCTING GRAINS IN BI2.1SR1.9CACU2O8+DELTA
【24h】

MAGNETIZATION STUDY OF SUPERCONDUCTING GRAINS IN BI2.1SR1.9CACU2O8+DELTA

机译：BI2.1SR1.9CACU2O8 + delta中超导晶粒的磁化研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The field dependence of DC magnetization was measured on a parallelepiped sample of superconducting Bi2.1Sr1.9CaCu2O8+delta at different temperatures below T-c with a maximum applied field of 160 kA/m. The experimental intragranular magnetization extracted from the measured magnetization data was analysed in terms of the Kim critical state model together with the surface barrier modified equilibrium magnetization. Even though at low temperature (T = 5 K) the experimental data could be explained by magnetization derived from the Kim model, the 'Z'-shaped loops observed at higher temperatures could be explained only by taking into account the surface barrier modified equilibrium magnetization. Material-dependent parameters, such as critical current density as a function of field, fields for first flux entry (H-1) and last flux exit (H-2) and lower critical field (H-c1), were estimated. At higher temperatures, the contribution of equilibrium magnetization (M(eq)) is found to be dominating compared to the bulk magnetization. The possible reason for the significant contribution of equilibrium magnetization in granular superconductors is discussed. [References: 37]
机译：在超温Bi2.1Sr1.9CaCu2O8 + delta的平行六面体样品上，在低于T-c的不同温度下测量了直流磁化强度的磁场依赖性，最大施加磁场为160 kA / m。从测量的磁化强度数据中提取的实验性晶内磁化强度根据Kim临界状态模型以及表面势垒修饰的平衡磁化强度进行了分析。即使在低温（T = 5 K）下，实验数据也可以通过Kim模型得出的磁化强度来解释，而在高温下观察到的“ Z”形环只能通过考虑表面势垒修饰的平衡磁化强度来解释。 。估计了与材料有关的参数，例如临界磁场强度与磁场的关系，第一个磁通进入（H-1）和最后一个磁通离开（H-2）以及下临界磁场（H-c1）的场强。在较高温度下，发现平衡磁化强度（M（eq））与体磁化强度相比起主要作用。讨论了颗粒超导体中平衡磁化强度显着贡献的可能原因。 [参考：37]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号