Innovative Instrumentation to Measure Magnetic Susceptibility

Author

Das, Nipu Kumar ; Dey, Shuvashis ; Pal, Shovon ; Barat, P.

Author_Institution

Variable Energy Cyclotron Center, Kolkata, India

Volume

49

Issue

9

fYear

2013

fDate

Sept. 2013

Firstpage

4965

Lastpage

4969

Abstract

A simplified instrumentation with nominal circuitry has been developed to measure in- and out-of-phase complex magnetic susceptibility of bulk magnetic samples. A unique shape of the absolute coil is implemented to improve the magnetic field homogeneity inside the coil. Complex susceptibility of nano-composite is measured by an innovative phase detection circuit. In this paper, we also discuss in detail the principle, design, and the performance of the instrumentation. This susceptometer is also suitable for liquid samples, viz., ferro-fluids, blood samples, etc.

Keywords

coils; magnetic field measurement; magnetic sensors; magnetic susceptibility; nanocomposites; phase detectors; phase measurement; absolute coil shape; blood sample; bulk magnetic sample; ferrofluid; in-of-phase complex; innovative phase detection circuit; instrumentation; liquid sample; magnetic field homogeneity; magnetic susceptibility measurement; nanocomposite susceptibility measurement; out-of-phase complex; phase measurement; susceptometer; Ferro-fluids; nano-composites; phase measurement; superconductors; superparamagnetism; susceptibility; susceptometer;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2259247

Filename

6506962