AC magnetic properties of large volume of water - Susceptibility measurement in unshielded environment

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Abstract

To investigate the effect of low-frequency magnetic-field exposure of a human body, the low-frequency AC magnetic property of a large volume of water was measured by low-frequency magnetic field exposure (from 50 Hz to 1.2 kHz). The results indicate that the AC magnetic property of water is due to diamagnetism in the low-frequency range. The phase between the main magnetic field and the generated magnetic field remained constant at about 180°. Results were not affected by conductivity or pH. Moreover, the magnetic-field strength from water showed a susceptibility frequency dependence proportional to the frequency above approximately 400 Hz. Because of the incremental effects of susceptibility, the magnetic field from water was measured using a conventional magnetic sensor (magnetic resistive; MR) in an unshielded environment.

Original languageEnglish
Pages (from-to)L1097-L1099
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume45
Issue number41
DOIs
Publication statusPublished - Oct 25 2006

Keywords

  • AC magnetic property
  • Diamagnetism
  • Magnetic sensor
  • Susceptibility
  • Water

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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