Magnetism was an interested area for researchers since time immemorial. Magnets were seen with immense wonder by kids in the ancient period. Now magnetic gadgets are in common use. The synthesis of nanomaterials opened a new era of nanomagnetic fluids. Nanomagnetic fluids have immense applications-in the fabrication of sensors, in the fabrication of microelectronic devices, in sophisticated and risky surgeries etc. To start with let me explain a simple method to synthesize Zinc Ferrite based nanomagnetic fluid.
1. You take Zinc sulphate and Iron nitrate powders in the weight ratio 1:2.
2. Mix the powder and dissolve in distilled water.
3. Heat the solution upto boiling temperature.
4. While cooling add ammonia solution drop by drop till the colour of the solution becomes perfect black.
5. Filter the solution and the residue you dry.
6. Residue is mixed with ethylene glycol and keep it for 48 hours.
7. Ball milling the above solution for 120 hours will yield zinc ferrite nanomagnetic fluid.
Potential applications are there. Companies in America are charging upto 100 $ for 100 ml solution.But we can synthesize the same amount by expending just 10 $.
More details later
