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001-es BibID:	BIBFORM069205
Első szerző:	Nándori István (fizikus)
Cím:	Magnetic particle hyperthermia: Power losses under circularly polarized field in anisotropic nanoparticles / I. Nándori, J. Rácz
Dátum:	2012
ISSN:	2470-0045 2470-0053
Megjegyzések:	The deterministic Landau-Lifshitz-Gilbert equation has been used to investigate the nonlinear dynamics ofmagnetization and the specific power loss in magnetic nanoparticles with uniaxial anisotropy driven by a rotatingmagnetic field, generalizing the results obtained for the isotropic case found by P. F. de Chatel, I. Nándori, J. Hakl, S. Meszáros, and K. Vad [ J. Phys. Condens. Matter 21, 124202 (2009)]. As opposed to many applicationsof magnetization reversal in single-domain ferromagnetic particles, where losses must be minimized, in thispaper, we study the mechanisms of dissipation used in cancer therapy by hyperthermia, which requires theenhancement of energy losses. We show that for circularly polarized field, the energy loss per cycle is decreasedby the anisotropy compared to the isotropic case when only dynamical effects are taken into account. Thus, inthis case, in the low-frequency limit, a better heating efficiency can be achieved for isotropic nanoparticles. Thepossible role of thermal fluctuations is also discussed. Results obtained are compared to experimental data.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban hipertermia
Megjelenés:	Physical Review E. - 86 : 6 (2012), p. 061404. -
További szerzők:	Rácz Judit (1984-) (fizika-matematika tanár)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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