EFFECTS OF LN SUBSTITUTION IN LN2CUO4

被引：2

作者：

KIKKAWA, S ^{[1
]}

YAMAGUCHI, T ^{[1
]}

KANAMARU, F ^{[1
]}

MATSUBARA, I ^{[1
]}

KOSE, S ^{[1
]}

机构：

[1] GOVT IND RES INST OSAKA,OSAKA 563,JAPAN

来源：

PHYSICA C | 1991年 / 190卷 / 1-2期

关键词：

D O I：

10.1016/S0921-4534(05)80211-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Substitutions of Ln were investigated on Ln1.85Ce0.15CuO4 (Ln = Pr, Nd, Sm, Eu) and La0.85Ln'Sr0.15CuO4 (Ln' = La, Pr, Nd, Sm, Eu, Gd) in relation to the pressure effect of T(c). The T(c) values decreased with increasing atomic number of Ln3+ in both the T'-phase of Ln1.85Ce0.15CuO and the T-phase in La0.85Ln'Sr0.15CuO4. The decrease in T(c) agrees with the negative pressure effect of the T'-phase but conflicts with the positive pressure dependence of T(c) in the T-phase. The oxygen amount, which is crucial for the superconducting transition temperature T(c), changed as well as the lattice parameter with the Ln substitution.

引用

页码：97 / 98

页数：2

共 4 条

[1] PRESSURE-DEPENDENCE OF TC IN L2-XMXCUO4-Y (L = PR,ND,SM,EU M = CE,TH) - ANTISYMMETRIC BEHAVIOR OF ELECTRON-DOPED VERSUS HOLE-DOPED COPPER-OXIDE SUPERCONDUCTORS [J].