ISOTHERMAL MELT PROCESSING OF BI-2212 THICK-FILMS

被引：29
|
作者：
HOLESINGER, TG
PHILLIPS, DS
COULTER, JY
WILLIS, JO
PETERSON, DE
机构：
[1] Superconductivity Technology Center, Los Alamos National Laboratory, Los Alamos
来源：
PHYSICA C | 1995年 / 243卷 / 1-2期
关键词：
D O I：
10.1016/0921-4534(94)02455-3
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
An alternative melt-processing technique has been developed for the fabrication of Bi2Sr2CaCu2Oy (Bi-2212) thick films at temperatures over 100 degrees C lower than those employed in conventional Bi-2212 melt processing. Isothermal melt processing combines the melting and solidification steps at the same temperature [T.G. Holesinger et al., Appl. Phys. Lett. 63 (1993) 982]. This technique is possible due to the large drop in the solidus temperature with decreasing oxygen partial pressure. High-quality thick films were processed at temperatures as low as 770 degrees C. Such films were found to be well-textured, contain relatively few secondary phases, and possess critical current densities over 1 X 10(5) A/cm(2) at 4 K in self-field.
引用
收藏
页码：93 / 102
页数：10
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