Journal ArticleDOI
Effect of alignment of easy axes on dynamic magnetization of immobilized magnetic nanoparticles
Takashi Yoshida,Yuki Matsugi,Naotaka Tsujimura,Teruyoshi Sasayama,Keiji Enpuku,Thilo Viereck,Meinhard Schilling,Frank Ludwig +7 more
TLDR
In this paper, the effect of the alignment of the magnetic easy axes on the dynamic magnetization of immobilized magnetic nanoparticles under an AC excitation field was explored, and it was shown that the parallel-aligned sample has the largest hysteresis in the magnetization curve and the largest harmonic magnetization spectra.About:
This article is published in Journal of Magnetism and Magnetic Materials.The article was published on 2017-04-01. It has received 46 citations till now. The article focuses on the topics: Magnetic anisotropy & Magnetization.read more
Citations
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Enhanced saturation magnetization and stability of magnetic nanofluids based on FeCo@CoFe2O4 nanoparticles
Rongzhang Guan,Junzhang Wang,Xiufang Bian,Mengchun Yu,Yinghui Yang,Chao Yuan,Chao Wang,Dujiang Lu +7 more
Journal ArticleDOI
Modeling the magnetization dynamics for large ensembles of immobilized magnetic nanoparticles in multi-dimensional magnetic particle imaging
TL;DR: In this paper , a model-based approach was proposed to model the magnetization response of a large ensembles of magnetic nanoparticles to magnetic fields which allows determining the spatial distribution of the MNP concentration from measured voltage signals.
Posted Content
A simulation framework for particle magnetization dynamics of large ensembles of single domain particles: Numerical treatment of Brown/Néel dynamics and parameter identification problems in magnetic particle imaging.
TL;DR: This work focuses on magnetization dynamics in large ensembles of single domain nanoparticles being characterized by either Brownian or N\'{e}el rotation mechanisms, for which a unified computational framework is developed and investigated.
Journal ArticleDOI
Influence of field amplitude and dipolar interactions on the dynamic response of immobilized magnetic nanoparticles: Perpendicular mutual alignment of an alternating magnetic field and the easy axes.
TL;DR: In this article , the dynamic magnetic properties of an ensemble of interacting immobilized magnetic nanoparticles with aligned easy axes in an applied ac magnetic field directed perpendicular to the easy axes are considered.
Journal ArticleDOI
Modeling the magnetization dynamics for large ensembles of immobilized magnetic nanoparticles in multi-dimensional magnetic particle imaging
Hannes Albers,Tobias Knopp,Tobias Knopp,Martin Möddel,Martin Möddel,Marija Boberg,Marija Boberg,Tobias Kluth,Tobias Kluth +8 more
TL;DR: In this paper, a model-based approach where the magnetization response is simulated by a Neel rotation model for the particle's magnetic moments and the ensemble magnetization is obtained by solving a Fokker-Planck equation approach is presented.
References
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Heating magnetic fluid with alternating magnetic field
TL;DR: In this paper, the authors developed analytical relationships and computations of power dissipation in magnetic fluid (ferrofluid) subjected to alternating magnetic field and showed that the dissipation results from the orientational relaxation of particles having thermal fluctuations in a viscous medium.
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Tomographic imaging using the nonlinear response of magnetic particles
TL;DR: A method for obtaining a high-resolution image of magnetic tracers that takes advantage of the nonlinear magnetization curve of small magnetic particles and has the potential to be developed into an imaging method characterized by both high spatial resolution as well as high sensitivity.
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Progress in applications of magnetic nanoparticles in biomedicine
Quentin A. Pankhurst,Quentin A. Pankhurst,Nguyen T. K. Thanh,Nguyen T. K. Thanh,S. K. Jones,Jon Dobson +5 more
TL;DR: A progress report on the biomedical applications of magnetic nanoparticles since 2003 is presented in this paper, with a focus on magnetic actuation for in vitro non-viral transfection and tissue engineering.
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Langevin-dynamics study of the dynamical properties of small magnetic particles
TL;DR: In this paper, the Langevin-dynamics approach was used to study the dynamics of magnetic nanoparticles, and the results were compared with different analytical expressions used to model the relaxation of nanoparticle ensembles, assessing their accuracy.
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Hyperthermic effects of dissipative structures of magnetic nanoparticles in large alternating magnetic fields
TL;DR: Numerically compared the magnetic loss in rotatable nanoparticles in aqueous media with that of non-rotatable nanoparticle anchored to localised structures to shed new light on the design of targeted magnetic hyperthermia treatments.