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The effect of the disk magnetic element profile on the saturation field and noise of a magneto-modulation magnetic field sensor

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Abstract

Using the finite element method, it was shown by simulations that the approximation of a semielliptic thickness profile of magnetic disk by a stepped profile reduces the saturation field. Reducing the saturation field improves the sensitivity of magneto-modulation sensors, which is confirmed by experiments in the measurements of noise using magnetic field sensors that have a core with a stepped profile. The obtained level of magnetic sensor noise with a four-stage-core profile (1.5 × 10−9 Oe/Hz1/2) is more than an order of magnitude lower than in the known modern counterparts.

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Authors and Affiliations

  1. Russian Quantum Center, Skolkovo, Moscow, 143025, Russia

    P. M. Vetoshko, A. K. Zvezdin & V. I. Belotelov

  2. Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, 125009, Russia

    P. M. Vetoshko

  3. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991, Russia

    A. K. Zvezdin & V. I. Belotelov

  4. Institute for Design Problems in Microelectronics, Russian Academy of Sciences, Zelenograd, 124681, Russia

    V. A. Skidanov

  5. Research Center Carat, 79031, Lviv, Ukraine

    I. I. Syvorotka & I. M. Syvorotka

  6. Lomonosov Moscow State University, Moscow, 119991, Russia

    V. I. Belotelov

Authors
  1. P. M. Vetoshko
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  2. A. K. Zvezdin
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  3. V. A. Skidanov
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  4. I. I. Syvorotka
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  5. I. M. Syvorotka
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  6. V. I. Belotelov
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Corresponding author

Correspondence to V. I. Belotelov.

Additional information

Original Russian Text © P.M. Vetoshko, A.K. Zvezdin, V.A. Skidanov, I.I. Syvorotka, I.M. Syvorotka, V.I. Belotelov, 2015, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2015, Vol. 41, No. 9, pp. 103–110.

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Vetoshko, P.M., Zvezdin, A.K., Skidanov, V.A. et al. The effect of the disk magnetic element profile on the saturation field and noise of a magneto-modulation magnetic field sensor. Tech. Phys. Lett. 41, 458–461 (2015). https://doi.org/10.1134/S1063785015050144

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  • DOI: https://doi.org/10.1134/S1063785015050144

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