A Simple Alternating Current Magnetometer of the Automatic Balancing Type

Naoshi Ikeda; Kay Kohn

doi:10.1143/JJAP.29.208

A Simple Alternating Current Magnetometer of the Automatic Balancing Type

Naoshi Ikeda
, Kay Kohn

Research output: Contribution to journal › Article › peer-review

8 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 language	English
Pages (from-to)	208-209
Number of pages	2
Journal	Japanese journal of applied physics
Volume	29
Issue number	1 R
DOIs	https://doi.org/10.1143/JJAP.29.208
Publication status	Published - Jan 1990
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

Access to Document

10.1143/JJAP.29.208

Cite this

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title = "A Simple Alternating Current Magnetometer of the Automatic Balancing Type",

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{\texttimes}10-7emu of magnetic moment or higher at the field of 0.8 Oe in amplitude and 159 Hz in frequency.",

keywords = "Ac susceptibility, Hartshorn bridge, High temperature superconductor, Magnetization measurement, Magnetometer, Spin glass",

author = "Naoshi Ikeda and Kay Kohn",

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AU - Kohn, Kay

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AB - 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.

KW - Ac susceptibility

KW - Hartshorn bridge

KW - High temperature superconductor

KW - Magnetization measurement

KW - Magnetometer

KW - Spin glass

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UR - https://www.scopus.com/pages/publications/0025206838#tab=citedBy

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ER -

A Simple Alternating Current Magnetometer of the Automatic Balancing Type

Abstract

Keywords

ASJC Scopus subject areas

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