Measuring magnetic moments of polydisperse ferrofluids utilizing the inverse Langevin function

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

doi:10.1103/PhysRevB.100.134425

Measuring magnetic moments of polydisperse ferrofluids utilizing the inverse Langevin function

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

Institute of Medical Engineering

2 Citations (Scopus)

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 language	English
Article number	134425
Journal	Physical Review B
Volume	100
Issue number	13
ISSN	2469-9950
DOIs	https://doi.org/10.1103/PhysRevB.100.134425
Publication status	Published - 18.10.2019

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10.1103/PhysRevB.100.134425

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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.",

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AU - Rehberg, Ingo

AU - Richter, Reinhard

AU - Hartung, Stefan

AU - Lucht, Niklas

AU - Hankiewicz, Birgit

AU - Friedrich, Thomas

PY - 2019/10/18

Y1 - 2019/10/18

N2 - 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.

AB - 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.

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Measuring magnetic moments of polydisperse ferrofluids utilizing the inverse Langevin function

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