Magnetic and Low DC Field Sensing Analysis of Cobalt-Doped YBCO Superconductors as the Core of Fluxgate-Type Sensors

In this study, the critical factors affecting the sensitivity of a magnetic field sensor, based on linear DC field dependence of second harmonic signals generated by co-application of AC and DC fields to polycrystalline type II superconductors, were handled. For this purpose, the Y-123 superconducti...

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Bibliographic Details
Published in:Journal of superconductivity and novel magnetism 2017-08, Vol.30 (8), p.2329-2333
Main Authors: Çoker, E. Gülce, Can, Hava, Topal, Uğur
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Condensed Matter Physics
Magnetic Materials
Magnetism
Original Paper
Physics
Physics and Astronomy
Strongly Correlated Systems
Superconductivity
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Summary:In this study, the critical factors affecting the sensitivity of a magnetic field sensor, based on linear DC field dependence of second harmonic signals generated by co-application of AC and DC fields to polycrystalline type II superconductors, were handled. For this purpose, the Y-123 superconducting samples with different amounts of cobalt ion, as a core material, were synthesized in order to get the best sensing performance. From the M – T and M – H measurements, we have tried to understand the relation between the 2f signal strength (used as the sensor signal) and the characteristic magnetic properties of these superconductors, such as the T c (on), the T c (off), and the H c1g . Finally, we could achieve to sense 0.5 μ Oe DC fields by using the Y-123 sample doped with 0.06 wt% of cobalt.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-016-3697-6