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

页码：L1632 / L1634

页数：3

共 6 条

[1] SUPERCONDUCTIVITY AT 60-K IN LA2-XSRXCACU2O6 - THE SIMPLEST DOUBLE-LAYER CUPRATE [J].