TRANSPORT CRITICAL CURRENT IN BULK SINTERED Y1Ba2Cu3OxAND POSSIBILITIES FOR ITS ENHANCEMENT
TRANSPORT CRITICAL CURRENT IN BULK SINTERED Y1Ba2Cu3OxAND POSSIBILITIES FOR ITS ENHANCEMENT
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块状烧结 Y1Ba2Cu3Ox 中的传输临界电流及其增强的可能性
DOI：
10.1111/j.1551-2916.1987.tb00122.x
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
J. Ekin
中科院分区：
文献类型：
--
作者：
J. Ekin
Several general processing methods for increasing the critical current density, J{sub c}, in bulk sintered Y{sub 1}Ba{sub 2}Cu{sub 3}O{sub x} superconductor are outlined. Data indicate that the transport J{sub c} in bulk polycrystalline specimens is dominated by a weak-link region between high-J{sub c} grains and that potentially much higher J{sub c} may be possible. Two possible causes of such a weak-link phenomenon are considered: low-T{sub c} phases or impurities localized in the grain boundary region, and anisotropy of the superconducting properties. Several methods for minimizing the weak-link effects to increase the J{sub c} are discussed.
