SURFACE-RESISTANCE MEASUREMENT OF SUPERCONDUCTING YBA2CU3O7 IN A MAGNETIC-FIELD

被引：9

作者：

CHIN, CC

RAINVILLE, PJ

DREHMAN, AJ

DEROV, JS

STEINBECK, J

DRESSELHAUS, G

DRESSELHAUS, MS

机构：

[1] MIT,DEPT PHYS,CAMBRIDGE,MA 02139

[2] USAF,ROME AIR DEV CTR,BEDFORD,MA 01731

[3] MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139

[4] MIT,DEPT ELECT ENGN & COMP SCI,CAMBRIDGE,MA 02139

来源：

JOURNAL OF MATERIALS RESEARCH | 1990年 / 5卷 / 08期

关键词：

Ceramic Materials--Electric Conductivity - Magnetic Field Effects - Surfaces--Electric Conductivity - Yttrium Compounds--Electric Conductivity;

D O I：

10.1557/JMR.1990.1599

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the magnetic-field dependent surface resistance of polycrystalline YBa2Cu3O7(Tc = 92 K), measured using a brass cylindrical cavity resonator, operating at 16.5 GHz in the TE011 mode. A dc magnetic field Happ is applied parallel to the superconducting sample surface, and the temperature dependence of the surface resistance is measured for four different values of Happ (0 T, 0.22 T, 1 T, 5 T). An effective medium theory and the two-fluid model are used to fit the surface resistance versus temperature measurements both in zero field and for various applied fields. These results are applied to characterize the microwave properties of a polycrystalline ceramic superconductor. © 1990, Materials Research Society. All rights reserved.

引用

页码：1599 / 1604

页数：6

共 33 条

[1] THEORY OF FLUX CREEP IN HARD SUPERCONDUCTORS [J].