Magnetic measurement of the moisture content in soil: Diamagnetic measurement with the presence of ferromagnetic material

Keiji Tsukada, Yasutaka Masuda, Yudai Ishihara, Toshihiko Kiwa

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

To measure the moisture content of soil, we developed a method that measures the magnetic field generated when the primary magnetic field Is exposed. Soil contains two different types of materials: water as a diamagnetic material and Iron sand as a ferromagnetic material. Water shows a constant phase shift from the primary magnetic field as well as a frequency dependence of the magnetic field strength, and iron sand showed the opposite characteristics. Using these magnetic properties, a moisture content signal was extracted, even with Interference of the iron sand.

Original languageEnglish
Pages (from-to)670081-670083
Number of pages3
JournalApplied Physics Express
Volume1
Issue number6
DOIs
Publication statusPublished - Jun 1 2008

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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