The University of Texas at Austin
College of Engineering

Nanoscale Properties: Magnetic

Magnetic Properties of Nanomaterials

The strength of a magnet is measured in terms of coercivity and saturation magnetization values. These values increase with a decrease in the grain size and an increase in the specific surface area (surface area per unit volume) of the grains. Therefore nanomaterials present also good properties in this field.

Applications of Magnetic Properties of Nanomaterials

High-power magnets
Magnets made of nanocrystalline yttrium-samarium-cobalt grains possess very unusual magnetic properties due to their extremely large surface area. Typical applications for these high-power rare-earth magnets include quieter submarines, automobile alternators, land-based power generators, and motors for ships, ultra-sensitive analytical instruments, and magnetic resonance imaging (MRI) in medical diagnostics.

Silver nanoparticles covered with carbon film

Silver nanoparticles covered with carbon film.

^top