Measuring magnetic moments of polydisperse ferrofluids utilizing the inverse Langevin function

Ingo Rehberg, Reinhard Richter, Stefan Hartung, Niklas Lucht, Birgit Hankiewicz, Thomas Friedrich

Abstract

The dipole strength of magnetic particles in a suspension is obtained by a graphical rectification of the magnetization curves based on the inverse Langevin function. The method yields the arithmetic and the harmonic mean of the particle distribution. It has an advantage compared to the fitting of magnetization curves to some appropriate mathematical model: It does not rely on assuming a particular distribution function of the particles.

Original languageEnglish
Article number134425
JournalPhysical Review B
Volume100
Issue number13
ISSN2469-9950
DOIs
Publication statusPublished - 18.10.2019

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