magnetic sensor – TechConnect Briefs

Hysteresis-free spin valves for GMR sensors

Ustinov V.V., Milyaev M.A., Naumova L.I., Proglyado V.V., Krinitsina T.P., Institute of Metal Physics, RU

Top spin valves Ta/[FeNi/CoFe]/Cu/ CoFe/AFM/Ta based on antiferromagnetics (AFM) Fe50Mn50 and Mn75Ir25 with varying [Fe20Ni80/Co90Fe10] composite free layer parameters and Cu interlayer thickness were prepared by DC magnetron sputtering. GMR characteristics of spin valves (SV) [...]

Using Spiral Inductors for Detecting Hybridization of DNAs Labeled with Magnetic Beads

Azimi S.M., Bahmanyar M.R., Zolgharni M., Balachandran W., Brunel University, UK

This paper introduces an inductance-based sensor for detection of DNA hybridization and investigates its performance by means of computer simulation. In order to detect the occurrence of hybridization, single strand target DNA’s are tagged with [...]

A Design Tool for Inductive Position and Speed Sensors via a Fast Integral Equation Based Method

Kamon M., Nguyen A-M., Gilbert J.R., Microcosm Technologies, Inc., US

This paper describes using 3D integral equation based simulation in combination with simulation managment to provide a design tool for an eddy-current inductive position and speed sensor under development at CSEM Microsystems. Both the frequency [...]

Analytical Study of Vertical Hall (VH)-Devices Using an Adapted Conform Mapping Technique

Besse P.A., Schott C., Popovic R.S., EPFL, CH

We adapt the conforrn mapping technique to the analytical calculation of two dimensional vertical Hall (VH)-devices with five electrical contacts. With our new method the finite size of the two output current electrodes is taken [...]