2016/04/15 by Н. Ногинова, Noginova, Natalia, Brittany Bates +3
Energy · Engineering · Physics and Astronomy · #Characterization and Applications of Magnetic Nanoparticles #FOS: Physical sciences #Iron oxide chemistry and applications #Magnetic properties of thin films #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
paper · pdf · doi:10.48550/arxiv.1604.04594
openalex publication_date 2016/04/15 · openalex created_date 2022/08/12 · openalex updated_date 2026/07/28
Superparamagnetic nanoparticles containing hundreds and thousands of coupled electron spins are on the boundary between classical and quantum behavior, and demonstrate features which are typical for paramagnetic spins and absent in macroscopic ferromagnetic systems. In order to better understand the evolution of magnetization dynamics from quantum to classical behavior with the increase in the system size, we study the electron magnetic resonance signal in suspensions of iron oxide nanoparticles as the function of the particle size. The experimental data are compared with numerical simulations based on the giant spin approach.