Magnetic particle hyperthermia: Neel relaxation in magnetic nanoparticles under circularly polarized field

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	Magnetic particle hyperthermia: Neel relaxation in magnetic nanoparticles under circularly polarized field
	P. F. de Chatel; I. Nandori; J. Hakl; S. Meszaros; K. Vad
	2009
发表期刊	Journal of Physics-Condensed Matter
ISSN	0953-8984
卷号	21 期号:12
摘要	The mechanism of magnetization reversal in single-domain ferromagnetic particles is of interest in many applications, in most of which losses must be minimized. In cancer therapy by hyperthermia the opposite requirement prevails: the specific loss power should be maximized. Of the mechanisms of dissipation, here we study the effect of Neel relaxation on magnetic nanoparticles unable to move or rotate and compare the losses in linearly and circularly polarized fields. We present exact analytical solutions of the Landau-Lifshitz equation as derived from the Gilbert equation and use the calculated time-dependent magnetizations to find the energy loss per cycle. In frequencies lower than the Larmor frequency, linear polarization is found to be the better source of heat power, at high frequencies (beyond the Larmor frequency) circular polarization is preferable.
部门归属	[de chatel, p. f.; nandori, i.; hakl, j.; meszaros, s.; vad, k.] inst nucl res, h-4001 debrecen, hungary. [de chatel, p. f.] chinese acad sci, inst met res, shenyang 110016, peoples r china.;de chatel, pf (reprint author), inst nucl res, pob 51, h-4001 debrecen, hungary
关键词	Therapy
URL	查看原文
WOS记录号	WOS:000263889900005
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31864
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. F. de Chatel,I. Nandori,J. Hakl,et al. Magnetic particle hyperthermia: Neel relaxation in magnetic nanoparticles under circularly polarized field[J]. Journal of Physics-Condensed Matter,2009,21(12).
APA	P. F. de Chatel,I. Nandori,J. Hakl,S. Meszaros,&K. Vad.(2009).Magnetic particle hyperthermia: Neel relaxation in magnetic nanoparticles under circularly polarized field.Journal of Physics-Condensed Matter,21(12).
MLA	P. F. de Chatel,et al."Magnetic particle hyperthermia: Neel relaxation in magnetic nanoparticles under circularly polarized field".Journal of Physics-Condensed Matter 21.12(2009).