A Simple Alternating Current Magnetometer of the Automatic Balancing Type

Naoshi Ikeda, Kay Kohn

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

An improvement of a Hartshorn type alternating current magnetometer is reported. The use of a dual channel oscillator, a two-phase lock-in amplifier and a personal computer enabled us to obtain a simple feedback system for automatic balancing of the bridge. The resolution of this system is about 3×10-7emu of magnetic moment or higher at the field of 0.8 Oe in amplitude and 159 Hz in frequency.

Original languageEnglish
Pages (from-to)208-209
Number of pages2
JournalJapanese Journal of Applied Physics
Volume29
Issue number1 R
DOIs
Publication statusPublished - Jan 1990
Externally publishedYes

Keywords

  • Ac susceptibility
  • Hartshorn bridge
  • High temperature superconductor
  • Magnetization measurement
  • Magnetometer
  • Spin glass

ASJC Scopus subject areas

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

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