Development of a compact moving-sample magnetometer using high-Tc superconducting quantum interference device

Mohd Mawardi Saari, Kenji Sakai, Toshihiko Kiwa, Akira Tsukamoto, Seiji Adachi, Keiichi Tanabe, Akihiko Kandori, Keiji Tsukada

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We developed a compact moving-sample magnetometer that uses a high-temperature superconductor-superconducting quantum interference device (high-T c SQUID) to directly measure the flux coupled to a normal detection coil from a sample's magnetic moment in the presence of an external DC magnetic field. The moving-sample method is employed by inserting the sample between the poles of a DC electromagnet and vibrating the sample along the axis perpendicular to the external field axis using an actuator at a frequency of 2.693 Hz. First, the magnetic field of the sample is transferred by a first-order differential normal Cu coil to a SQUID for detection. Then, the SQUID output is fed to a lock-in amplifier for detection. The critical feature of the system design is the use of high-T c SQUID, which enables the realization of a compact system. The basic characteristics of the developed system are presented, and the current system exhibited a detection limit of 1 x 10 -7 emu.

Original languageEnglish
Pages (from-to)46601
JournalJapanese Journal of Applied Physics
Volume51
Issue number4 PART 1
DOIs
Publication statusPublished - Apr 25 2012

Fingerprint

SQUIDs
Magnetometers
magnetometers
interference
Magnetic fields
coils
direct current
Electromagnets
High temperature superconductors
electromagnets
Magnetic moments
Poles
magnetic fields
high temperature superconductors
systems engineering
Actuators
Systems analysis
Fluxes
poles
amplifiers

ASJC Scopus subject areas

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

Cite this

Development of a compact moving-sample magnetometer using high-Tc superconducting quantum interference device. / Saari, Mohd Mawardi; Sakai, Kenji; Kiwa, Toshihiko; Tsukamoto, Akira; Adachi, Seiji; Tanabe, Keiichi; Kandori, Akihiko; Tsukada, Keiji.

In: Japanese Journal of Applied Physics, Vol. 51, No. 4 PART 1, 25.04.2012, p. 46601.

Research output: Contribution to journalArticle

Saari, Mohd Mawardi ; Sakai, Kenji ; Kiwa, Toshihiko ; Tsukamoto, Akira ; Adachi, Seiji ; Tanabe, Keiichi ; Kandori, Akihiko ; Tsukada, Keiji. / Development of a compact moving-sample magnetometer using high-Tc superconducting quantum interference device. In: Japanese Journal of Applied Physics. 2012 ; Vol. 51, No. 4 PART 1. pp. 46601.
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