OPTIMUM PREPARATION AND ELEMENTAL ADDITION FOR TL-BASED 2223 PHASE TL2BA2CA2CU3O10-DELTA

被引:26
|
作者
XIN, Y
LI, YF
GU, DX
PEDERSON, DO
SHENG, ZZ
机构
[1] Department of Physics, University of Arkansas, Fayetteville
来源
PHYSICA C | 1991年 / 184卷 / 1-3期
关键词
D O I
10.1016/0921-4534(91)91516-7
中图分类号
O59 [应用物理学];
学科分类号
摘要
TlBaCaCuO samples with 95%-pure 2223 phase Tl2Ba2Ca2Cu3O10-delta and 120 K T(c) can be prepared in a non-closed system from component oxides with a starting composition of 2223 by heating at 895-degrees-C for about 48 h in flowing oxygen. With this procedure, elemental addition at 0.2 molar level maintains 2223 phase purity of 75-95% and a T(c) of 112-120 K for most of the investigated elements (Na, K, Rb, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Zn, Cd, Hg, Se and Te).
引用
收藏
页码:185 / 189
页数:5
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