Magnetic nanomaterials

Magnetic particles of nanometer size are attracting growing fundamental and tehnological interest because of their unique magnetic properties, which are dominated by supermagnetism. The unique properties of nanopartcles and the size dependance of those properties lead to a number of applications of these materials, such as pigments, magnetic agents, lubricant additives, receptor particles for microwaves as well as in shielding layers, including the production of magnetic colloids, or ferrofluids.

Nanotesla Institute produces doped and undoped magnetic nanomaterials of various particle size and morphology and can be able to tailor their properties on demand to your specific application.

A number of magnetic nanomaterials are avaliable in different forms, such as dry powders, as surface functionalized powders or as stable dispersions in a variety of solvents, both aqueous and organic:

  • Maghemite (MGH) (γ-Fe2O3)
  • Magnetite (Fe3O4)
  • Co-ferrite (CoFe2O4)
  • MnZn-ferrite (MnZnFe2O4)

Dry powders

  • Primary particle size from 10 nm – 100 nm
  • Specific surface area (m2/g): 8-150

Surface functionalized powders

The nature of the nanoparticle's surface functionalization is essential, given the strong dependance of material property on structure.

Functionalized magnetic nanoparticles often exhibit improved physical and chemical properties, what makes them useful in a broad range of applications.

Magnetic nanoparticles can be coated with a thin nanometer sized layer of various organic and inorganic materials.

Organic coated MGH nanoparticlesCo-ferrite nanoparticles

 Organic coated MGH nanoparticles            Co-ferrite nanoparticles

Inorganic coated Co-ferrite nanoparticles
Inorganic coated Co-ferrite nanoparticles