Nucleation and growth of superconducting phase in Bi2Sr2Ca2.2Cu3OX

被引：7
作者：
Shin, DC
O, YT
Park, JS
Hong, KJ
Lee, IH
Han, SC
Sung, TH
机构：
[1] Chosun Univ, Dept Adv Mat Engn, Kwangju 501759, South Korea
[2] Chosun Univ, Res Inst Energy Resources Technol, Kwangju 501759, South Korea
[3] Chosun Univ, Dept Phys, Kwangju 501759, South Korea
[4] Chonbuk Natl Univ, Res Inst Adv Mat Dev, Coll Engn, Chonju 561756, Chonbuk, South Korea
[5] Chonbuk Natl Univ, Sch Adv Mat Engn, Coll Engn, Chonju 561756, Chonbuk, South Korea
[6] Korea Elect Power Res Inst, Adv Energy & Tech Grp, Taejon 305380, South Korea
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 391卷 / 01期
关键词：
Bi-2223; Bi-free phase; nucleation; growth; texture;
D O I：
10.1016/S0921-4534(03)00852-9
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The nucleation and growth of a superconducting phase were investigated using ball milled Bi2Sr2Ca2.2Cu3Ox precursor powders. As the heat-treatment time increased, more Bi2Sr2Ca1Cu2OX (Bi-2212) changed to Bi2Sr2Ca2Cu3OX (Bi-2223) and the major second phase was changed from (Sr,Ca)(14)Cu24OX (14:24) to (Sr,Ca)(2)Cu1OX. Following the formation of the Bi-2212 phase near the 14:24 phase, the Bi-2223 phase nucleated preferentially at the interface between the Bi-2212 and 14:24 phases in the relatively short time of 20 h. The preferential nucleation of Bi-2223 was explained by its structural similarity and low interfacial energy with both the Bi-free and Bi-2212 phases. The texturing mechanism of Bi-2223 was discussed on the basis of its nucleation behavior. (C) 2003 Elsevier Science B.V. All rights reserved.
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收藏
页码：55 / 60
页数：6
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