Functional study of fluxgate sensors with amorphous magnetic materials cores
| Autor: | A. Republic of Moldovanu, H. Chiriac, M. Macoviciuc, E. Diaconu, C. Ioan, E. Republic of Moldovanu, M. Tomut |
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| Předmět: |
Materials science
business.industry Metals and Alloys Atmospheric temperature range Low frequency Condensed Matter Physics Fluxgate compass Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amorphous solid Magnetic field symbols.namesake Nuclear magnetic resonance Fourier analysis Magnet symbols Optoelectronics Electrical and Electronic Engineering business Instrumentation Excitation |
| Zdroj: | Scopus-Elsevier |
| Popis: | A functional study of the TFS-3 type fluxgate sensor with amorphous magnetic material cores is made. The magnetic material used in these sensors is Romanian amorphous material Co68.25Fe4.5Si12.25B15 thin ribbon produced at the Institute of Technical Physics, Iasi and prepared by rapid quenching from the melt on a rotating copper wheel. The sensor's functional parameters and thermostability were measured. The sensor sensitivity is between 4.5 and 5.5 μV nt−1 and for fields greater than 100 nT does not depend on temperature variation in the range +20 to +70°C. Also the temperature variation does not influence the noise of the sensor which does not exceed 600 pTpp. The offset thermostability corresponds to a thermal drift of 1 nT °C−1 over the whole mentioned temperature range. The ability of sensors to measure a.c. magnetic fields by means of the two side bands of the second harmonic was studied using Fourier analysis. The study was done for a.c. field frequencies of up to 15 kHz, at excitation frequencies up to 30 kHz. For an induction field up to 26 μTpp the response is linear, showing the possibility of using the sensor for also measuring low frequency a.c. fields. |
| Databáze: | OpenAIRE |
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