Speaker
Description
Contactless sensors are often preferred in applications where physical manipulation with the sensor is not possible or where direct contact could affect the measurements. Microwires can serve as passive sensors which respond to changes in the environment (e.g., magnetic field, temperature) without the need to physically connect them to the measured object. These microwires can be presented as a passive sensor because they do not require an external power source for detection [1].
Temperature dependence using the change in Curie temperature is a very important aspect in the field of materials and sensors, especially in the case of microwires. The change in Curie temperature can be very useful for temperature sensors because microwires exhibit significant changes in magnetic properties when the temperature is close to the Curie point. This change can be detected using contactless methods, such as hysteresis loops. Microwires treated in this way can be used for very accurate and sensitive temperature measurement [2].
In this paper, we want to show, that we can adjust the temperature dependence of microwire parameters depending on the chromium content. This can significantly contribute to the optimization magnetic (Curie temperature) and mechanical properties of the microwire depending on the temperature. Changing the chromium content involves manipulating the structure and composition of the microwire.
Acknowledgements
This work was partially supported by Slovak Grant Agencies VEGA 1/0350/24 and VEGA1/0180/23
References
[1] V. Zhukova et al., “Switching field fluctuations in a glass-coated Fe-rich amorphous microwire,” Journal of Magnetism and Magnetic Materials, vol. 249, no. 1–2. Elsevier BV, pp. 131–135, Aug. 2002. https://doi.org/10.1016/s0304-8853(02)00520-6
[2] P. Jacko et al., “Advantages of Bistable Microwires in Digital Signal Processing,” Sensors, vol. 24, no. 8. MDPI AG, p. 2423, Apr. 10, 2024. https://doi.org/10.3390/s24082423
