Superconducting properties and microstructures of Pb-doped Bi2Sr2Ca1Cu2Ox spherical particles prepared by containerless solidification and annealing

被引:4
作者
Hishinuma, Y
Fujii, H
Matsumoto, A
Hirata, K
Takeya, H
Kumakura, H
Togano, K
机构
[1] Univ Tsukuba, Cooperat Grad Sch, Tsukuba, Ibaraki 3050006, Japan
[2] Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan
[3] Japan Sci & Technol Corp, JST, CREST, Tsukuba, Ibaraki 3050047, Japan
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1998年 / 37卷 / 7B期
关键词
Bi2Sr2Ca1Cu2Ox superconductor; spherical particle; amorphous phase; Pb-doping; irreversibility field;
D O I
10.1143/JJAP.37.L859
中图分类号
O59 [应用物理学];
学科分类号
摘要
The superconducting properties and microstructures of Pb-doped Bi-2212 spherical particles prepared by containerless solidification and subsequent annealing were investigated. After solidification, the spherical particles are present in an amorphous state which can be transformed into the Bi-2212 phase by annealing at temperatures above 800 degrees C. The Pb-doped spherical particles show an improved Bur pinning behavior which is considered to arise from the modification of the modulation structure.
引用
收藏
页码:L859 / L862
页数:4
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