A simple technique to measure the magnetic susceptibility of liquids

Zijun Chen, Joshua Ellis, E. Dan Dahlberg

Research output: Contribution to journalReview article

2 Scopus citations

Abstract

A novel technique for measuring the magnetic susceptibility of liquids with modest applied magnetic fields (order of 0.25 T) is presented. The deformation of the liquid surface by a magnetic field is determined by a laser bounce or optical lever technique. The energy balance between the magnetic energy and the gravitational potential of the diamagnetic or paramagnetic liquid interaction is used to determine the susceptibility. The energy due to the surface tension energy is about 10 of the gravitational energy and can be neglected for fast measurements.

Original languageEnglish (US)
Article number095112
JournalReview of Scientific Instruments
Volume83
Issue number9
DOIs
StatePublished - Sep 1 2012

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