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Open Type Magnetic Shields by High Tc Superconducting Cylinders

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Advances in Superconductivity VIII

Abstract

We developed open type magnetic shields for biomagnetic measurement combining high Tc superconducting cylinders and high-permeability cylinders. The size was i.d.220mm × o.d.310mm × length 650mm. High Tc superconducting cylinders were fabricated by spray-coated BiSrCaCuO thick films on Ag substrates. High-permeability cylinders were made of Ni-based alloy. The magnetic shielding effects were measured by the attenuation ratio of the inside magnetic fields and the external magnetic fields which were applied to axial and transverse direction. The transverse magnetic shielding effect of the high Tc superconducting cylinders was 7 × l0-2. The axial magnetic shielding effect of the high-permeability cylinders was 2×10”2. The magnetic shielding effects of the combination were under 7×10-4 regardless of the direction of external magnetic fields. Open type magnetic shields are easy to put investigated objects and SQUID sensors.

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References

  1. G.L. Romani, S.J. Williamson, L. Kaufman, Rev. Sci. Instrum. 53, 1815 (1982).

    Article  ADS  Google Scholar 

  2. N. Hayashi, S. Takano, M. Higuchi, M. Ueda, N. Harada, H. Ogata, H. Itozaki, H. Kado, Advances in Superconductivity V (Springer-Verlag,1993), p.1297.

    Book  Google Scholar 

  3. K. Hasegawa, H. Itozaki, H. Kado, Advances in Superconductivity VII (Springer-Verlag, 1995), p.1305.

    Google Scholar 

  4. B. Cabrera, Ph.D.Thesis, Stanford Univ.(1975).

    Google Scholar 

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Author information

Authors and Affiliations

  1. Superconducting Sensor Laboratory, 2-1200 Muzaigakuendai, Inzai, Chiba, 270-13, Japan

    K. Hasegawa & H. Itozaki

  2. Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba, Ibaraki, 305, Japan

    H. Kado

Authors
  1. K. Hasegawa
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  2. H. Itozaki
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  3. H. Kado
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Editor information

Editors and Affiliations

  1. Department of Electronics, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-01, Japan

    Hisao Hayakawa

  2. Superconductivity Research Laboratory, ISTEC, Koto-ku, Tokyo, 135, Japan

    Youichi Enomoto

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© 1996 Springer Japan

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Hasegawa, K., Itozaki, H., Kado, H. (1996). Open Type Magnetic Shields by High Tc Superconducting Cylinders. In: Hayakawa, H., Enomoto, Y. (eds) Advances in Superconductivity VIII. Springer, Tokyo. https://doi.org/10.1007/978-4-431-66871-8_305

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  • DOI: https://doi.org/10.1007/978-4-431-66871-8_305

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-66873-2

  • Online ISBN: 978-4-431-66871-8

  • eBook Packages: Springer Book Archive

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