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Wednesday, June 8, 2011

Synthesis of Fine Particles of Zinc Ferrite

Synthesis of nanoparticles in very fine form is a difficult task and various researchers all over the world are trying their level best in this field to develop nanoparticles in the fine and pure form. Zinc ferrite is an antiferromagnetic material with good electrical and magnetic properties which can be utilised for several applications such as transformer cores, dielectric etc. For the synthesis of zinc ferrite, starting precursors are zinc oxide and iron oxide. These two starting materials are taken in the weight ratio 1:2 in a agate mortar and mixed with the help of toluene for 30 minutes. Now heat the material at around 500 Kelvin and then allow it to cool. This process(Mixing-heating-cooling) repeat for 3 times. Now the powder sample is put in the vial of high energy ball milling unit and milled for 60 minutes. The powder is now taken from the milling unit and mix a small amount of water and make it in the paste form. This paste is taken in a crucible and heated to 750 Kelvin in a furnace. This will yield very fine particles of zinc ferrite.

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