Magnetic field and temperature dependence of the intergranular activation energy in a polycrystalline HgBa2Ca2Cu3O8+delta superconductor

被引：4

作者：

Kim, GC ^{[1
]}

Kim, YC ^{[1
]}

机构：

[1] PUSAN NATL UNIV,DEPT PHYS,PUSAN 609735,SOUTH KOREA

来源：

PHYSICA C | 1997年 / 279卷 / 1-2期

关键词：

AC susceptibility; high-T-c superconductors; activation energy;

D O I：

10.1016/S0921-4534(97)00161-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The AC susceptibilities of a polycrystalline HgBa2Ca2Cu3O8+delta sample were measured as a function of temperature, magnetic field and frequency. The activation energy, obtained from an Arrhenius plot for the frequency f and the maximum temperature T-p in the imaginary part chi '' of the AC susceptibility, was approximated by U(H,T) approximate to A(1 - T/T-c)H-0.15 for temperature and field. The maximum field H-p in the imaginary part chi '' exhibited the power-law dependence (1 - T/T-c)(5) for the temperature range near T-c. (C) 1997 Elsevier Science B.V.

引用

页码：122 / 126

页数：5