Abstract: This article investigates the temperature sensitivity of digital Magneto-Impedance (GMI) sensors by comparing experimental data with theoretical predictions. The study demonstrates that the experimental results are in excellent agreement with the theoretical model, showing a high level of consistency within the examined dynamic range. Notably, the sensitivity of the sensor at the zero bias point is significantly lower than at other bias points, with a measured sensitivity of approximately -0.2 mΩ/°C, validating simulation predictions. The linearity around the zero bias point also aligns with theoretical expectations. The agreement between experimental and theoretical results is strong for positive fields and those near zero, with theoretical values within established confidence intervals. However, a significant discrepancy was noted between -10 and -31 μT, suggesting areas for further improvement. This work confirms the reliability of the theoretical model while identifying areas needing further research. It provides a basis for enhancing the thermal stability of GMI sensors and reducing temperatureinduced drift, paving the way for advancements in magnetic sensing applications.

Keywords: GMI sensor, Temperature drift, Sensitivity, Off-diagonal configuration.

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