Hysteresis Loss-Induced Temperature in Ferromagnetic Nanoparticle

Chen, B. C.; Ho, Ching-Yen; Kao, Li-Jen; Wu, Wei; Tsai, Yi-Hsin; Ma, Chi

doi:10.1109/tmag.2013.2278311

Cited by 9 publications

(11 citation statements)

References 14 publications

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“…Prior work has investigated the dependence of heating efficiency of MNPs on the properties of the particles and the amplitude and frequency of the AMF. − Experimental ,, and computational ,, work has investigated the energy dissipation rate of noninteracting MNPs in AMFs, with and without superimposed static magnetic fields. However, several recent experiments suggest that magnetic interactions between particles may play an important role in the energy dissipation rate of the nanoparticles in an AMF. − The magnetization dynamics of chains and clusters of single-domain MNPs in various geometries have also been experimentally studied. − To better understand these effects and make predictions for experiments, theoretical studies have been performed based on various models and methods, including the well-known Stoner–Wohlfarth model, ,, solving the Fokker–Planck equation, ,, and analysis based on the stochastic Landau–Lifshitz–Gilbert (LLG) equation . The LLG equation has also been applied in simulations, in which magnetically interacting nanoparticles are fixed in a solid matrix, with , and without − consideration of the rotational degrees of freedom of the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…17−21 The magnetization dynamics of chains and clusters of single-domain MNPs in various geometries have also been experimentally studied. 22−24 To better understand these effects and make predictions for experiments, theoretical studies have been performed based on various models and methods, including the well-known Stoner−Wohlfarth model, 10,25,26 solving the Fokker−Planck equation, 11,27,28 and analysis based on the stochastic Landau− Lifshitz−Gilbert (LLG) equation. 29 The LLG equation has also been applied in simulations, in which magnetically interacting nanoparticles are fixed in a solid matrix, with 30,31 and without 32−35 consideration of the rotational degrees of freedom of the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetization Dynamics and Energy Dissipation of Interacting Magnetic Nanoparticles in Alternating Magnetic Fields with and without a Static Bias Field

Zhao

Rinaldi

2018

J. Phys. Chem. C

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The effect of interparticle interactions on the magnetization dynamics and energy dissipation rates of spherical single-domain magnetically blocked nanoparticles in static and alternating magnetic fields (AMFs) was studied using Brownian dynamics simulations. For the case of an applied static magnetic field, simulation results suggest that the effective magnetic diameter of interacting nanoparticles determined by fitting the equilibrium magnetization of the particles to the Langevin function differs from the actual magnetic diameter used in the simulations. Parametrically, magnetorelaxometry was studied in simulations where a static magnetic field was suddenly applied or suppressed for various strengths of magnetic interactions. The results show that strong magnetic interactions result in longer chain-like particle aggregates and eventually longer characteristic relaxation time of the particles. For the case of applied AMF with and without a static bias magnetic field, the magnetic response of interacting nanoparticles was analyzed in terms of the harmonic spectrum of particle magnetization and dynamic hysteresis loops, whereas the energy dissipation of the particles was studied in terms of the calculated specific absorption rate (SAR). Results suggest that the effect of magnetic interactions on the SAR varies significantly depending on the amplitude and frequency of the AMF and the intensity of the bias field. These computational studies provide insight into the role of particle–particle interactions on the performance of magnetic nanoparticles for applications in magnetic hyperthermia and magnetic particle imaging.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetization Dynamics and Energy Dissipation of Interacting Magnetic Nanoparticles in Alternating Magnetic Fields with and without a Static Bias Field

Zhao

Rinaldi

2018

J. Phys. Chem. C

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“…Magnetic field RF heating is based on hysteresis loss, Néel relaxation, and Brownian relaxation. Energy is transferred to MNPs as heat [4]. The benefit of this approach is the ability to remotely generate heat.…”

Section: Introductionmentioning

confidence: 99%

Magnetic induced heating of gold-iron oxide nanoparticles

Brown

Coopersmith

Fulmer

et al. 2017

2017 IEEE International Symposium on Antennas and Propagation &Amp; USNC/URSI National Radio Science Meeting

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This study investigates the heating characteristics of aqueous solutions of nanoparticles (NPs) through a magnetically induced field. Through simulation and experimental studies, key parameters that affect the temperature profiles of magnetic nanoparticles (MNPs) are identified. Specifically, the influence of magnetic field strength, MNPs concentration, MNPs composition, and coil size was explored as a way to understand the correlation between the NPs structure and the magnetic induced heating process. I.

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“…The process of magnetic induced heating involves applying an alternating magnetic field of known magnitude and frequency to a magnetic material typically through the use of an induction coil. The mechanisms behind nanoparticle heating are due to the hysteresis loss, Néel relaxation loss, and Brownian relaxation loss [1], [4]- [6]. Heat generation due to these mechanisms can be optimized by controlling the magnetic properties of the material, the geometry of the material, and the material environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Nanoparticles are typically used instead of bulk material when the intended target is on the nano or micro scale. For example, several studies show that nanoparticles are used in cancer and drug release treatment within the body because nanoparticles can enter the body with no harm and target cancer cells or other affected parts of the body [2], [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Magnetic induced heating of nanoparticle solutions

Murph

Brown

Coopersmith

et al. 2016

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Magnetic induced heating of nanoparticles (NP) provides a useful advantage for many energy transfer applications. This study aims to gain an understanding of the key parameters responsible for maximizing the energy transfer leading to nanoparticle heating through the use of simulations and experimental results. It was found that magnetic field strength, NP concentration, NP composition, and coil size can be controlled to generate accurate temperature profiles in NP aqueous solutions. I.

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Hysteresis Loss-Induced Temperature in Ferromagnetic Nanoparticle

Cited by 9 publications

References 14 publications

Magnetization Dynamics and Energy Dissipation of Interacting Magnetic Nanoparticles in Alternating Magnetic Fields with and without a Static Bias Field

Magnetization Dynamics and Energy Dissipation of Interacting Magnetic Nanoparticles in Alternating Magnetic Fields with and without a Static Bias Field

Magnetic induced heating of gold-iron oxide nanoparticles

Magnetic induced heating of nanoparticle solutions

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