TRANSPORT-PROPERTIES OF YBA2(CU0.98FE0.02)3OY, YBA2(CU0.98CO0.02)3OY, YBA2(CU0.98NI0.02)3OY SUPERCONDUCTING THIN-FILMS

被引：12

作者：

SONG, LW ^{[1
]}

NARUMI, E ^{[1
]}

YANG, F ^{[1
]}

SHAO, HM ^{[1
]}

SHAW, DT ^{[1
]}

KAO, YH ^{[1
]}

机构：

[1] SUNY BUFFALO,NEW YORK STATE INST SUPERCOND,BUFFALO,NY 14260

来源：

PHYSICA C | 1991年 / 174卷 / 4-6期

关键词：

D O I：

10.1016/0921-4534(91)91560-Q

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Critical current densities of YBa2(Cu0.98M0.02)3O(y) (M = Fe, Co, Ni) superconducting thin films made by laser ablation are investigated as a function of temperature and magnetic field. J(c) in magnetic field shows that Ni-doping has a large effect on intragranular current while Fe-doping seems to have more influence on intergranular coupling. All three dopants give rise to basically same field-dependence of their volume pinning force F(p) at elevated temperature (T = 60 K) except in the low field region (H < 2 T), and F(p) can be scaled to a universal function F(p)/F(p,max) = b(1-b)2. Hall effect measurements show that the effective carrier concentration is lower than that in undoped material.

引用

页码：303 / 308

页数：6

共 31 条

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