They are a class of nanoparticles which can be manipulated using the magnetic field. It comprises of 1-100 sized magnetic elements including iron (Fe), Nickel (Ni) and Cobalt (Co) and their compounds.

Magnetism is a phenomenon which is molecule that exhibits an attractive or repulsive property on other molecules. For example, Diamagnetic compounds include Quartz, paramagnetic; Ferromagnetic compound include Iron, Cobalt and Nickel and their respective alloys.

Magnetic Nanoparticles Synthesis: Features

1. Finite size effects:

In single domain, particles with uniform spins are aligned almost in the same direction while in case of paramagnetic domain the Magnetic Nanoparticles Synthesis moments not interacting and can fluctuate when thermal energy is larger than anisotropic energy.

2. Surface effects:

Decrease in the size of the particles often results in the large proportion of nanoparticles of the surface atoms which implies surface spin in a prominent manner. Exhibits no resonance and no coercively.

Magnetic Nanoparticle Synthesis procedures include

1. Co-Precipitation:

It is a facile and convenient method of producing the magnetic nanoparticles from aqueous salt solutions.

2. Micro Emulsion:

A Water oil base emulsion are mainly preferred, as they are isotropic, thermodynamically stable and consists of three components that is water oil and surfactant Nano water droplets.

3. Thermal Decomposition:

It can be prepared by high temperature decomposition of organ metallic precursors like acetyacetonates.

4. Hydrothermal:

It is a solvent thermal method used for the preparation of magnetic nano particles and fine powders.

Uses of Magnetic Nanoparticles Synthesis

Uses of Magnetic Nanoparticles synthesis have beenproved in vast field of INVIVO therapeutic purposes.

1. Hyperthermia:

Tissues are heated which are levelled with magnetic particles at 42-46 degree centigrade altering the magnetic field for regional or local or whole body purpose.

For healthy tumour cell injection the magnetic nanoparticles are used in brain tumour.

Applied under altering magnetic field and rise in temperature damage the tissue cells or tumour cells.

2. Invitro separation and selection technique:

Magnetorelaxometry: It includes the evaluation of immune assays and measurement of viscosity that is the relaxation of the net magnetic nanoparticles Synthesis after removal of magnetic field.

3. Industrial Applications:

Magnetic inks are in use as magnetic data storages. Pigments in the form of iron oxide are used to a great extent including ceramics, paints and porcelain.

4. Catalyst:

Magnetite and Haematite are used as a catalyst in the Haber’s process to synthesize ammonia at high water gas shift reaction.