J00: Poster Session I (2pm-5pm CST)

Hall BC

Magnetic sensors find applications in accelerometers, magnetometers, biomagnetism, magnetic compasses, traffic control, non-destructive analysis, and virus and cancer cell detection. The most sensible technique for detecting magnetic fields is the Superconducting Quantum Interference Device (SQUID), which uses cryogenic liquid, requires large facilities and has a high-cost operation. In this context, magnetic sensors based on the Giant Magnetoimpedance (GMI) effect can be a low-cost alternative, once they are compact, present tunable sensibility, fast response, and operate at room temperature. In this work, we simulate meander-like thin film magnetic sensing elements of Permalloy (Ni₈₀Fe₂₀) for working based on GMI. To understand how parameters such as composition, film thickness, meander's number of turns, and total length of the sensing element affect the sensitivity of the sensor, we simulate hysteresis curves and spatial distribution of the magnetic moments using the well-established micromagnetic simulator Object Oriented Micromagnetic Framework (OOMMF). We also investigate the preferential anisotropies axes along with the element sensor works more effectively and determine a set of parameters that maximizes the sensor's sensitivity to proceed with fabrication processes.