SQUID gradiometer measurement system for magnetorelaxometry in a disturbed environment

Author

Schambach, J. ; Warzemann, L. ; Weber, P. ; Kotitz, R. ; Weitschies, W.

Author_Institution

Friedrich-Schiller-Univ., Jena, Germany

Volume

9

Issue

2

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

3527

Lastpage

3530

Abstract

A SQUID measurement system for magneto-relaxometry (MRX) in disturbed environment is presented. It was developed for the determination of the distribution of magnetic nanoparticles in large objects like animals. The system is based on a thin film LTS SQUID gradiometer with a baseline of 5 mm and a field gradient sensitivity of about 30 fT/cmHz/sup 1/2/. The entire system is PC-controlled and includes a nonmagnetic x-y stage. A Helmholtz coil of 80 cm diameter allows the magnetization of the samples with fields up to 7 mT. First measurements in a disturbed environment are presented.

Keywords

SQUID magnetometers; magnetic particles; magnetic relaxation; nanostructured materials; 7 mT; Helmholtz coil; PC control; animal; disturbed environment; magnetic nanoparticle; magnetization; magnetorelaxometry; measurement system; thin film LTS SQUID gradiometer; Coils; Immune system; Magnetic domains; Magnetic field measurement; Magnetic flux; Magnetic separation; Magnetic shielding; Magnetization; Nanoparticles; SQUIDs;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.783791

Filename

783791