High temperature superconductive flux gate magnetometer

Author

Gershenson, Meir

Author_Institution

US Naval Coastal Syst. Center, Panama City, FL, USA

Volume

27

Issue

2

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

3055

Lastpage

3057

Abstract

A different type of HTS superconducting magnetometer based on the nonlinear magnetic behavior of bulk HTS materials is proposed and investigated. The device design is based on the generation of second harmonics which arise as a result of nonlinear magnetization observed in Type-II superconductors. Even harmonics are generated from the nonlinear interaction of an AC excitation signal with an external DC magnetic field which acts as a bias signal. It is shown that an increase in sensitivity of about one or two orders of magnitude is expected by use of more favorable geometries. An increase in frequency from 100 kHz to 100 MHz is expected to improve sensitivity by 30 dB

Keywords

barium compounds; high-temperature superconductors; magnetometers; yttrium compounds; 100 MHz; 100 kHz; AC excitation signal; HTS superconducting magnetometer; Type-II superconductors; YBa₂Cu₃O_7-x; bulk HTS materials; external DC magnetic field; generation of second harmonics; geometries; high temperature superconductors; nonlinear magnetic behavior; nonlinear magnetization; sensitivity; AC generators; DC generators; High temperature superconductors; Magnetic materials; Magnetization; Magnetometers; Nonlinear magnetics; Superconducting devices; Superconducting materials; Superconductivity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.133854

Filename

133854