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- W2964117535 abstract "Abstract Magnetic vortices existing in soft magnetic nanoparticles with sizes larger than the single-domain diameter can be efficient nano-heaters in biomedical applications. Using micromagnetic numerical simulation we prove that in the optimal range of particle diameters the magnetization reversal of the vortices in spherical iron and magnetite nanoparticles is possible for moderate amplitudes of external alternating magnetic field, H 0 < 100 Oe. In contrast to the case of superparamagnetic nanoparticles, for the vortex configuration the hysteresis loop area increases as a function of frequency. Therefore, high values of the specific absorption rate, on the order of 1000 W/g, can be obtained at frequencies f = 0.5–1.0 MHz. Because the diameter D of a non single-domain particle is several times larger than the diameter d of a superparamagnetic particle, the volume of heat generation for the vortex turns out to be ( D / d ) 3 times larger. This shows the advantage of vortex configurations for heat generation in alternating magnetic field in biomedical applications." @default.
- W2964117535 created "2019-07-30" @default.
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- W2964117535 date "2018-01-19" @default.
- W2964117535 modified "2023-10-11" @default.
- W2964117535 title "Magnetic Vortices as Efficient Nano Heaters in Magnetic Nanoparticle Hyperthermia" @default.
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- W2964117535 doi "https://doi.org/10.1038/s41598-017-18162-8" @default.
- W2964117535 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5775370" @default.
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- W2964117535 hasPublicationYear "2018" @default.
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