Electroplated FeNi ring cores for fluxgates with field induced radial anisotropy

Being able to control the anisotropy of a magnetic core plays an important role in the development of a fluxgate sensor. Our aim is to induce anisotropy orthogonal to the direction of excitation because it generates a stable, low-noise fluxgate, as cited in the literature. In this paper, we present...

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Bibliographic Details
Published in:Journal of applied physics 2015-05, Vol.117 (17)
Main Authors: Butta, M., Ripka, P., Janosek, M., Pribil, M.
Format: Article
Language:English
Subjects:
Anisotropy
Domain walls
Electroplating
Excitation
Fluxgate magnetometers
Magnetic cores
Noise generation
Stability
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Summary:Being able to control the anisotropy of a magnetic core plays an important role in the development of a fluxgate sensor. Our aim is to induce anisotropy orthogonal to the direction of excitation because it generates a stable, low-noise fluxgate, as cited in the literature. In this paper, we present an original method for electroplating a ring core for a fluxgate with built-in radial anisotropy by performing the electroplating in a radial field produced by a novel yoke. The results show that the resulting anisotropy is homogeneously radial and makes the magnetization rotate, avoiding domain wall movement for low excitation fields.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4914874