Development of a compact DC magnetometer using HTS-SQUID and a rotating sample

Kenji Sakai, M. M. Saari, Toshihiko Kiwa, A. Tsukamoto, S. Adachi, K. Tanabe, A. Kandori, Keiji Tsukada

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17 Citations (Scopus)

Abstract

We developed a compact DC magnetometer using a high-temperature superconductor (HTS) superconducting quantum interference device (SQUID) to measure very weak magnetic signals from samples such as paramagnetic and diamagnetic materials. The samples were rotated in the DC magnetic field that was detected by a normal conductive pick-up coil. The detected signal was transferred to an input coil that was inductively coupled to the SQUID. To clarify the basic characteristics of this system, the magnetic signal from a magnetic material was measured by varying the sample position and rotation speed. Then, the magnetic signal from pure water was measured under the optimized condition and a very weak magnetic signal from pure water was successfully detected. Therefore, the developed system could be applied to various non-destructive evaluation systems.

Original languageEnglish
Article number045005
JournalSuperconductor Science and Technology
Volume25
Issue number4
DOIs
Publication statusPublished - Apr 2012

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Ceramics and Composites
  • Materials Chemistry
  • Metals and Alloys

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