SYNTHESIS OF TL-BASED 2234 SUPERCONDUCTORS

被引：17
|
作者：
KANEKO, T
HAMADA, K
ADACHI, S
YAMAUCHI, H
TANAKA, S
机构：
[1] Superconductivity Research Laboratory, International Superconductivity Technology Center, Koto-ku, Tokyo 135
来源：
JOURNAL OF APPLIED PHYSICS | 1992年 / 71卷 / 05期
关键词：
D O I：
10.1063/1.351087
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Nearly single-phase samples of superconducting Tl-Ba-Ca-Cu-O "2234" were successfully synthesized. The sample sintered in air had T(c) of 112 K. Post-annealing of the sintered sample in a high-pressure oxygen gas made its T(c) increase up to 115 K. The sample sintered in argon gas had T(c) of 90 K. The thermoelectric power (TEP) of the sample was also measured. All the samples showed positive TEP signals. The magnitude of TEP signal decreased as T(c) increased. Thus, it was likely that the as-sintered 2234 phase was in an under-doped state with respect to the optimum carrier concentration.
引用
收藏
页码：2347 / 2350
页数：4
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