Nonlinearity of dynamic magnetization in a superparamagnetic clustered-particle suspension with regard to particle rotatability under oscillatory field

Trisnanto, Suko Bagus; Kitamoto, Yoshitaka

doi:10.1016/j.jmmm.2015.07.016

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…real susc., (6) imag. susc., (7) real Debye susc., (3) imag. Debye susc., (4) Reduced Frequency the non-ideality of the system: the low-frequency behaviour of the real part; the low-frequency growth of the imaginary part; and the peak frequency of the imaginary part.…”

Section: Comparision Between Theory and Computer Simulationsmentioning

confidence: 99%

“…Magnetic AC susceptometry is a widely used technique for analysing and characterising the dynamic magnetic response in ferrofluids [1][2][3][4]. The dynamic response of magnetic-nanoparticle suspensions is fundamentally important for medical applications in general [5], and in particular for magnetic hyperthermia, usually applied alone or in combination with other treatments to eliminate tumours [6].…”

Section: Introductionmentioning

confidence: 99%

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The influence of interparticle correlations and self-assembly on the dynamic initial magnetic susceptibility spectra of ferrofluids

Иванов

Kantorovich

Elfimova

et al. 2017

Journal of Magnetism and Magnetic Materials

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Using computer simulations and a mean-field theoretical approach, we study how the growth in dipolar interparticle correlations manifests itself in the frequency-dependent initial magnetic susceptibility of a ferrofluid. Our recently developed theory gives the correct single-particle Debye-theory results in the lowconcentration, non-interacting regime; and it yields the exact leading-order contributions from interparticle correlations. The susceptibility spectra are analysed in terms of the low-frequency behaviours of the real and imaginary parts, and the position of the peak in the imaginary part. By comparing the theoretical predictions to the results from Brownian dynamics simulations, it is possible to identify the conditions where correlations are important, but where self-assembly has not developed. We also provide a qualitative explanation for the behaviour of spectra beyond the mean-field limit. of a randomly chosen magnetic nanoparticle 1.

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Section: Comparision Between Theory and Computer Simulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The influence of interparticle correlations and self-assembly on the dynamic initial magnetic susceptibility spectra of ferrofluids

Иванов

Kantorovich

Elfimova

et al. 2017

Journal of Magnetism and Magnetic Materials

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show abstract

“…χ está retrasada con respecto al campo de excitación, esta componente determina la capacidad de absorber energía y es la única que contribuye al aumento de la energia interna ∆U de la partícula [46], [47], [48] y se puede escribir de la siguiente forma:…”

Section: Ingeniería Y Cienciaunclassified

Una guía para el estudio de nanopartículas magnéticas de óxidos de hierro conaplicaciones biomédicas. Parte I

Coral

Mera

2017

ing.cienc.

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ResumenEl siguiente artículo corresponde a una revisión teórica y experimental sobre las las principales propiedades físicas de un sistema de nanopartículas magnéticas con aplicaciones en el tratamiento del cáncer por hipertermia magnética. Así, se divide el mismo en dos partes: en la primera parte, correspondiente a esta entrega, se realiza una revisión teórica detallada sobre las principales propiedades de las nanopartículas, y las leyes físicas que las rigen, tales como magnetización, interacciones entre partículas y su ordenamiento en suspensiones coloidales. En una segunda entrega, se tratarán temas como la síntesis de nanopartículas, técnicas y modelos de caracterización física y medidas experimentales de disipación de calor bajo campos de radiofrecuencia, y su correlación con los modelos mostrados en este artículo. Se presenta este trabajo como una guía ya que ofrece una serie de pautas importantes para tener en cuenta al momento de realizar una investigación en nanopartículas magnéticas. Palabras clave: Disipación de calor; hipertermia magnética; nanopartí-culas magnéticas; óxidos de hierro; propiedades.

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Particle shape effects on ferrofuids flow and heat transfer under influence of low oscillating magnetic field

Hassan

Zeeshan

Majeed

et al. 2017

Journal of Magnetism and Magnetic Materials

155

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Nonlinearity of dynamic magnetization in a superparamagnetic clustered-particle suspension with regard to particle rotatability under oscillatory field

Cited by 7 publications

References 21 publications

The influence of interparticle correlations and self-assembly on the dynamic initial magnetic susceptibility spectra of ferrofluids

The influence of interparticle correlations and self-assembly on the dynamic initial magnetic susceptibility spectra of ferrofluids

Una guía para el estudio de nanopartículas magnéticas de óxidos de hierro conaplicaciones biomédicas. Parte I

Particle shape effects on ferrofuids flow and heat transfer under influence of low oscillating magnetic field

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