OPTIMIZATION OF THE HOLE CONCENTRATION IN THE 2-LAYER BISMUTH SUPERCONDUCTORS

被引：10

作者：

TANG, IM

LEELAPRUTE, S

SETSUWAN, P

机构：

[1] Department of Physics, Faculty of Science, Mahidol University, Bangkok

来源：

PHYSICA C | 1991年 / 177卷 / 1-3期

关键词：

D O I：

10.1016/0921-4534(91)90296-B

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dependence of T(c) on the hole concentration, n(H), in the two-layer bismuth superconductors is studied. Variation of the oxygen content in the ceramics is accomplished mainly by quenching the specimens from different points in the temperature region where the loss and gain of oxygen occurs. Cationic substitution (replacement of Bi by Pb and of Ca by Y (yielding the doubly substituted superconductor Bi1.6Pb0.4Sr2Y0.2Ca0.8Cu2Oz)) is also used to vary the hole concentration. The observed data points (for T(c) versus n(H)) form the positive slope portion of an inverted parabolic function dependence of T(c) on n(H) for the "2212" bismuth superconductors.

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页码：57 / 60

页数：4

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