Effects of annealing treatments on the superconducting properties of melt-processed YBCO doped with Ni
Effects of annealing treatments on the superconducting properties of melt-processed YBCO doped with Ni
复制标题
退火处理对熔融加工的掺Ni YBCO超导性能的影响
DOI：
10.1088/0953-2048/18/2/003
复制
发表时间：
2005
影响因子：
3.6
通讯作者：
B. Schüpp
中科院分区：
文献类型：
--
作者：
L. Shlyk;G. Krabbes;G. Fuchs;K. Nenkov;B. Schüpp
为了通过在Cu(2)平面上选择性取代Ni掺杂剂来优化Ni掺杂YBCO的超导性能，研究了在还原氧气氛下退火处理的影响。结果表明，氧含量最佳的ni掺杂样品在还原氧气氛中热处理后，其超导转变温度Tc进一步降低。这表明取代的Ni在Cu(1)的位置移动到Cu(2)的位置。然而，在还原O2气氛下热处理后，最佳掺杂Ni的样品的通量钉钉能力要弱于熔体加工的掺杂Li或Zn的YBCO。
To optimize the superconducting properties of Ni-doped YBCO by selective substitution of Ni dopants on Cu(2) plane sites, the effects of annealing treatments in reduced oxygen atmosphere have been studied. The results indicate that the superconducting transition temperature, Tc, of the Ni-doped samples with optimal oxygen content further decreases after heat treatment in reduced oxygen atmosphere. This suggests that substituted Ni at the Cu(1) sites moves to the Cu(2) sites. However, the flux pinning capabilities of the sample optimally doped with Ni after heat treatment in reduced O2 atmosphere are weaker compared to melt-processed YBCO doped with Li or Zn.