Diagnostics of the high-T/sub c/ superconductive films in a strong electromagnetic field

Author

Reznik, A.N.

Author_Institution

Inst. for Phys. of Microstructures, Acad. of Sci., Nizhny Novgorod, Russia

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

1474

Lastpage

1477

Abstract

The method for diagnostics of the nonlinear properties of the high-T/sub c/ superconductive films is proposed. It employs the experimentally obtained nonlinear radiocharacteristics of a superconductive resonator and takes into account the inhomogeneous distribution of the nonlinear surface impedance, caused by inhomogencity of the RF-magnetic field amplitude along a film surface. The last circumstance leads to the integral equation for surface impedance of a superconductor. The proposed method is based on solution of the inverse problem of electrodynamics. The dependences of surface resistance on the RF-magnetic field amplitude, and relationships between precision of the method and a measurement error are obtained.

Keywords

electric impedance; electromagnetic fields; high-temperature superconductors; measurement errors; superconducting microwave devices; superconducting resonators; superconducting thin films; surface conductivity; RF-magnetic field amplitude; electrodynamic inverse problem; high-T/sub c/ superconductive films; integral equation; measurement error; nonlinear radiocharacteristics; nonlinear surface impedance; strong electromagnetic field; superconductive resonator; Ear; Electrodynamics; Electromagnetic fields; Integral equations; Physics; Superconducting films; Superconducting microwave devices; Superconductivity; Surface impedance; Surface resistance;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.620851

Filename

620851