Title :
Innovative Instrumentation to Measure Magnetic Susceptibility
Author :
Das, Nipu Kumar ; Dey, Shuvashis ; Pal, Shovon ; Barat, P.
Author_Institution :
Variable Energy Cyclotron Center, Kolkata, India
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2259247
