Compositional and microstructural analysis of high Ic and Jc Bi-2212 conductors

被引：15

作者：

Holesinger, TG ^{[1
]}

Kennison, JA

Marken, KR

Miao, HP

Meinesz, M

Campbell, S

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] Oxford Superconducting Technol, Carteret, NJ USA

[3] SCI Engineered Prod, Columbus, OH USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2005年 / 15卷 / 02期

关键词：

bismuth compounds; composition; high temperaturensuperconductivity; microscopy;

D O I：

10.1109/TASC.2005.847652

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Compositional analysis of the Bi2Sr2CaCu2Oy (Bi-2212) and secondary phases in high-current Bi-2212 conductors was performed. The composition of the Bi-2212 phase in dip-coated Bi-2212 tapes tended toward the Sr-rich end of the Bi-2212 solid solution. The strontium and calcium contents of the Bi-2212 phase in round wire tended to lie closer to the starting composition of the powder. In all cases, there was an excess of bismuth and a deficiency of the alkaline earths with respect to the ideal 2212 stoichiometry. Microstructural analysis by transmission electron microscopy has shown the presence of Bi-2201 intergrowths within Bi-2212 grains and amorphous layers within the colonies of Bi-2212.

引用

页码：2562 / 2565

页数：4

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