Nanomagnetism

Abstract

Nanomagnetism is a branch of nanotechnology, which studies the magnetic properties of nanoparticles. Single-domain superparamagnetim, superferromagnetism and superspin glasses are different magnetic states which have been observed in a system of nanoparticles. Each of these magnetic states has unique features which determines the application range of magnetic nanoparticles assembly. Shell of nanoparticles is composed of canted spins while the core spins are almost regular. Study of nanoparticles system needs to explore and characterize several features, including different anisotropies, interactions between the particles, relaxation times, coercivity, remanent magnetization, saturation magnetization and etc. Researchers have made great efforts to characterize magnetic nanoparticles. Investigations in nanomagnetism field increases by developing the application range of nanoparticles in industry, medicine and daily life

Keywords

• nanoparticles
• superparamagnetism
• AC susceptibility
• interactions
• Henkel plot