Speaker
Ms
Assel Yermekova
(Yermekovna)
Description
Magnetic nano structured materials have huge interest because of their unique properties. The most widely studied magnetic nanoparticles is magnetite Fe3O4, which has great physical properties such as half metallic properties and strong spin polarization at room temperature. Moreover, its magnetic properties can be adjusted in size and shape. Therefore, Fe3O4 is applied in tunneling magnetoresistance devices, sensors, magnetic data storage, ferro fluids, and biomedical fields.1-4
This work presents a synthesis of nano structures based on Ferrum oxide by method of chemical deposition and a study of their structural properties and morphology which depend on changing solution pH.
The magnetite Fe3O4 was obtained by hydrolysis of a mixture of iron chloride (II) and (III) in a molar ratio of 1: 2 and with the addition of ammonium hydroxide.
This reaction of magnetite formation can be represented as follows:
FeCl2 + 2FeCl3 + 8NH3 · H2O Fe3O4 + 8NH4Cl + 4H2O
Summary
In this research the change of solution pH 1,5,7, the time of being in solutions is 1,5 and 10 days, the temperature of solutions 25 and 37 ºС were examined.
Kinetic curves of changes in structural properties are established depending on the acidity of the medium.
Primary author
Ms
Assel Yermekova
(Yermekovna)
Co-author
Ms
Dinara Tulebayeva
(L.N.Gumilyov Eurasian National University)
