Synthesis and characterization of (Bi,Cu)Sr2(RE,Ca)Cu2Oz (RE: Y or rare-earth element)

被引：1
|
作者：
Maeda, Toshihiko [1 ]
Tashiro, Tairiku [1 ]
Horii, Shigeru [1 ]
机构：
[1] Kochi Univ Technol, Dept Environm Syst Engn, Kami, Kohi 7828502, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷
关键词：
(Bi; Cu)Sr-2(RE; Ca)Cu2Oz; Chemical composition; Rare-earth substitution; Ca solubility;
D O I：
10.1016/j.physc.2010.01.013
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Samples with nominal compositions of x = 0-0.1 in (Bi(1+3x)/3Cu(2-3x)/3)Sr-2(RE1-xCax)Cu2Oz ((Bi,Cu)-"1-2-1-2"; RE: V or rare-earth element) were synthesized by a solid-state reaction method and characterized by means of X-ray diffractometry (XRD). It is confirmed that the (Bi,Cu)-"1-2-1-2" forms only when RE = Y, Dy and Ho. Single- or nearly single-phase samples are obtained for x = 0-0.05 and the Ca-free composition of this compound is determined to be (Bi1/3Cu2/3)Sr2RECu2Oz. Since ionic radii of Y, Dy and Ho are very close to each other and this seems to be an essential factor for the stability of the (Bi,Cu)-"1-2-1-2". (C) 2010 Elsevier B.V. All rights reserved.
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页码：S31 / S32
页数：2
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