León Félix L. Sanz B. Sebastián V. Torres T.E. Sousa M.H. Coaquira J.A.H. Ibarra M.R. Goya G.F. Gold-decorated magnetic nanoparticles design for hyperthermia applications and as a potential platform for their surface-functionalization Sci. rep. 10.1038/s41598-019-40769-2 2019 2019