Moisture content evaluation using improved high-tc squid-based rotating-sample magnetometer

Kenji Sakai, Naohiro Okamoto, Yuuta Watanabe, Mohd Mawardi Saari, Toshihiko Kiwa, Keiji Tsukada

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Moisture content evaluated by magnetic signal change measured by rotating-sample magnetometer using higherature superconductor superconducting quantum interference device (HTS-SQUID) was investigated. To realize highly sensitive measurement of moisture content, an improvement in signal-to-noise (S/N) ratio of the previously developed magnetometer was examined. To increase the S/N ratio, the sample case with short width along the sample's movement direction was employed. By reducing the sample case width, the obtained magnetic signal intensity increased, and the frequency component of magnetic signal shifted toward high frequencies, leading to the low magnetic field noise range measurements. Using the improved magnetometer, the moisture content of silica gel was measured, and the magnetic signal intensity increased as the amount of water in the silica gel increased. Therefore, we propose a high-sensitivity, noncontact, and nondestructive method for moisture content evaluation using rotating-sample magnetometer.

Original languageEnglish
Article number69268341
JournalIEEE Transactions on Applied Superconductivity
Volume25
Issue number3
DOIs
Publication statusPublished - Jun 1 2015

Fingerprint

Magnetometers
magnetic signals
magnetometers
moisture content
Moisture
evaluation
Silica Gel
Silica gel
silica gel
Signal to noise ratio
signal to noise ratios
SQUIDs
Superconducting materials
rangefinding
Magnetic fields
Water
interference
sensitivity
magnetic fields
water

Keywords

  • diamagnetism
  • HTS-SQUID
  • Magnetometer
  • moisture measurement

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Moisture content evaluation using improved high-tc squid-based rotating-sample magnetometer. / Sakai, Kenji; Okamoto, Naohiro; Watanabe, Yuuta; Saari, Mohd Mawardi; Kiwa, Toshihiko; Tsukada, Keiji.

In: IEEE Transactions on Applied Superconductivity, Vol. 25, No. 3, 69268341, 01.06.2015.

Research output: Contribution to journalArticle

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