Microstructural and superconducting properties of Bi-2212 thick films melt-solidified with Bi2Al4O9

被引：1

作者：

Noji, H ^{[1
]}

Furusawa, F ^{[1
]}

机构：

[1] Tsuruoka Natl Coll Technol, Dept Elect Engn, Yamagata 997, Japan

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1999年 / 12卷 / 04期

关键词：

D O I：

10.1088/0953-2048/12/4/009

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bi2Sr2CaCu2Ox (Bi-2212) thick films were prepared via the screen-printing method and partial melting. We investigate the influence of the melt-solidification process with Bi2Al4O9 On microstructural and superconducting properties of Bi-2212 thick films. The vaporization of bismuth from Bi2Al4O9 during the melt-solidification suppresses the growth of the impurities such as (Sr, Ca)-Cu-O and Bi-Sr-Ca-O at the film surface. However, the appearance of Bi2Sr2CuOx (Bi-2201) is remarkably unstable to a variation of the maximum temperature. The result of ac susceptibility measurements shows that the melt-solidification with Bi2Al4O9 leads to a sample with superior qualities of superconductivity which are characterized as a small scattering of intergranular coupling strength and a high transport property at around liquid-nitrogen temperature.

引用

页码：226 / 231

页数：6

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