Influence of shape, size and magnetostatic interactions on the hyperthermia properties of permalloy nanostructures.

ABSTRACT: We present a detailed study of permalloy (Ni₈₀Fe₂₀) nanostructures with variable shape (disk, cylinder and sphere) for magnetic hyperthermia application, exploiting hysteresis losses for heat release. The study is performed modifying nanostructure aspect ratio and size (up to some hundreds of nanometres), to find the optimal conditions for the maximization of specific heating capabilities. The parameters are also tuned to guarantee negligible magnetic remanence and fulfilment of biophysical limits on applied field amplitude and frequency product, to avoid aggregation phenomena and intolerable resistive heating, respectively. The attention is first focused on disk-shaped nanostructures, with a comparison between micromagnetic simulations and experimental results, obtai

SUBMITTER: Ferrero R 

PROVIDER: S-EPMC6488611 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature