PREPARATION AND SUPERCONDUCTING PROPERTIES OF LA2-X(CA1-YSRY)1+XCU2O6-X/2+DELTA

被引：33
|
作者：
KINOSHITA, K
SHIBATA, H
YAMADA, T
机构：
[1] NTT Basic Research Laboratories, Tokyo, 180, Midori-cho, Musashino-shi
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1990年 / 29卷 / 09期
关键词：
Crystal structure; High pressure synthesis; La[!sub]2-x[!/sub](Ca[!sub]1-y[!/sub]Sr[!sub]y[!/sub])[!sub]l+x[!/sub]Cu[!sub]2[!/sub]O[!sub]6-x/2+ƀ[!/sub] superconductivity;
D O I：
10.1143/JJAP.29.L1632
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Superconductivity has been detected in the Ca-based 2-1-2-6 compound La2-x(Ca1-ySry)1+xCu2O6-x/2+δ and the relationship between crystal structure and superconducting properties is investigated by varying x, y, and O2 pressure during synthesis. It is shown that the lattice parameter a is restricted to between 3.823 and 3.826 Å for the superconducting material, irrespective of x, y, and O2 pressure. For a fixed Sr content y, the smaller a is, the higher the Tc is obtained. On the other hand, lattice parameter c has no clear correlation with superconductivity. © 1990 The Japan Society of Applied Physics.
引用
收藏
页码：L1632 / L1634
页数：3
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