THE INCREASE OF TC IN DYBA2CU3O6+DELTA AND TL2BA2CUO6+DELTA AFTER LONG-TIME PASSING OF AN ELECTRIC-CURRENT

被引：10

作者：

MITIN, AV ^{[1
]}

ALEKSEEVSKII, NE ^{[1
]}

KHLYBOV, EP ^{[1
]}

机构：

[1] LF VERESHCHAGIN INST HIGH PRESSURE PHYS,TROITSK 142092,RUSSIA

来源：

PHYSICA C | 1992年 / 199卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90422-9

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A direct electric current of density J > 10(2) A/cm2 was passed for several h through polycrystalline samples of DyBa2Cu3O6+delta (delta = 0.3-0.7) and Tl2Ba2CuO6+DELTA (delta almost-equal-to- 0.1 ) which were immersed in liquid nitrogen. We have found a significant change in the temperature dependences of the electric resistance R(T) and an increase in the superconducting temperature T(c) after this procedure. The observed changes in R(T) and T(c) under action of the current can be explained by the oxygen redistribution and long-range ionic electromigration.

引用

页码：351 / 355

页数：5