Effect of Gd2Ba4CuMoOy addition on the band structure and spatial variation of superconducting properties in GdBa2Cu3O7−δ single domains
Effect of Gd2Ba4CuMoOy addition on the band structure and spatial variation of superconducting properties in GdBa2Cu3O7−δ single domains
复制标题
添加 Gd2Ba4CuMoOy 对 GdBa2Cu3O7−δ 单畴能带结构和超导性能空间变化的影响
DOI：
10.1088/0953-2048/18/8/010
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发表时间：
2005
影响因子：
3.6
通讯作者：
I. Hirabayashi
中科院分区：
文献类型：
--
作者：
Caixuan Xu;A. Hu;N. Sakai;M. Izumi;I. Hirabayashi
Gd2Ba4CuMoOy (Gd2411) single phase was synthesized in air and added into GdBa2Cu3O7−δ (Gd123) bulk superconductors with the addition amount ranging from 0.2% to 20%, in molar ratio to Gd123. Both microstructure and superconducting properties of each bulk were investigated from the seed position to the boundary of a single domain. Although a band structure with the alternative distribution of Gd2BaCuO5 (Gd211) and Gd2411 appeared in all samples, the range of this inhomogeneity only appeared within 5 mm from each side of the seed. The critical current density (Jc) shows that Gd2411 plays an important role in the control of the local superconducting properties. The highest Jc reached 84 500 A cm−2 at 77 K under the self-field in the sample with 0.4% addition of Gd2411.
